
TheMiddle Eastern theatre of World War I saw action between 30 October 1914 and 30 October 1918. The combatants were, on one side, theOttoman Empire (including the majority ofKurdish tribes andCircassians, and the relative majority ofArabs[18][19][20][21]), with some assistance from the otherCentral Powers; and on the other side, theBritish (with the help ofa small number ofJews,Greeks,Armenians, someKurdish tribes and Arab states, along withHindu, Sikh and Muslim colonial troops from India) as well as troops from the British Dominions of Australia, Canada, and New Zealand, theRussians (with the help ofArmenians, Assyrians, and occasionally some Kurdish tribes), and theFrench (with itsNorth African andWest African Muslim, Christian andother colonial troops) from among theAllied Powers. There were four main campaigns: theSinai and Palestine,Mesopotamian,Caucasus, andGallipoli campaigns. There were four more minor campaigns inPersia,South Arabia, theArabian interior, andLibya.
Both sides used localasymmetrical forces in the region. On the Allied side were Arabs who participated in theArab Revolt and theArmenian militia who participated in theArmenian resistance supported byRussia during the War; along withArmenian volunteer units, the Armenian militia formed the Armenian Corps of theFirst Republic of Armenia in 1918. In addition, theAssyrians joined the Allies and saw action in Southeastern Turkey, northern Mesopotamia (Iraq), northwestern Iran and northeastern Syria following theAssyrian genocide, instigating theAssyrian war of independence.[22]Turkswere persecuted by the invading Russian troops in the east and by Greek troops andArmenian fedayis in the west, east, and south ofAnatolia. The theatre covered the largest territory of all theatres in the war.
Russian participation in the theatre ended as a result of theArmistice of Erzincan (5 December 1917), after which the revolutionary Russian government withdrew from the war under the terms of theTreaty of Brest-Litovsk (3 March 1918). The Armenians attended theTrebizond Peace Conference (14 March 1918) which resulted in theTreaty of Batum on 4 June 1918. The Ottomans accepted theArmistice of Mudros with the Allies on 30 October 1918, and signed theTreaty of Sèvres on 10 August 1920 and later theTreaty of Lausanne on 24 July 1923.
The Ottoman Empire joined the Central Powers through the secretGerman–Ottoman alliance,[23] which was signed on 2 August 1914. The main objective of the Ottoman Empire in the Caucasus was the recovery of its territories that had been lost during theRusso-Turkish War (1877–1878), in particularArtvin,Ardahan,Kars, and the port ofBatum. Success in this region would force the Russians to divert troops from thePolish and Galician fronts.[24]
German advisors with the Ottoman armies supported the campaign for this reason. From an economic perspective, the Ottoman, or rather German, strategic goal was to cut off Russian access to thehydrocarbon resources around theCaspian Sea.[25]
Germany established anIntelligence Bureau for the East on the eve of World War I. The bureau was involved in intelligence-gathering and subversive missions to Persia and Egypt,[26] and to Afghanistan,[citation needed] to dismantle theAnglo-Russian Entente.[27] Ottoman War MinisterEnver Pasha claimed that if the Russians could be beaten in the key cities ofPersia, it could open the way to Azerbaijan, as well as the rest of the Middle East and the Caucasus.
If these nations were to be removed from Western influence, Enver envisioned a cooperation between these newly establishedTurkic states. Enver's project conflicted with European interests which played out as struggles betweenseveral key imperial powers. The Ottomans also threatened Britain's communications withIndia and the East via theSuez Canal. The Germans hoped to seize the Canal for the Central Powers, or at least to deny the Allies use of the vital shipping route.
The British feared that the Ottomans might attack and capture the Middle East (and later Caspian) oil fields.[25] The BritishRoyal Navy depended upon oil from the petroleum deposits in southern Persia, to which the British-controlledAnglo-Persian Oil Company had exclusive access.[25]
Oxford historian (and Conservative MP)J.A.R. Marriott summarizes the British debates on strategy for the Near East and Balkan theatre:
The Russians viewed theCaucasus Front as secondary to theEastern Front. They feared a campaign into the Caucasus aimed at retaking Kars which had been taken from the Ottoman Empire during theRusso-Turkish War (1877–1878), and the port of Batum.[29]
In March 1915, when the Russian foreign ministerSergey Sazonov met with British ambassadorGeorge Buchanan and French ambassadorMaurice Paléologue, he stated that a lasting postwar settlement demanded full Russian possession of the capital city of the Ottoman Empire,Constantinople, the straits of theBosphorus andDardanelles, theSea of Marmara, southernThrace up to the Enos-Midia line as well as parts of theBlack Sea coast of Anatolia between the Bosphorus, theSakarya River and an undetermined point near the Bay ofIzmit. The Russian Imperial government planned to replace the Muslim population of Northern Anatolia and Istanbul with more reliableCossack settlers.[29]
TheArmenian national liberation movement sought to establish anArmenian state within theArmenian Highlands. TheArmenian Revolutionary Federation achieved this goal later in the war, with the establishment of the internationally recognizedFirst Republic of Armenia in May 1918. As early as 1915, theAdministration for Western Armenia and laterRepublic of Mountainous Armenia were Armenian-controlled entities, while theCentrocaspian Dictatorship was established with Armenian participation. None of these entities were long lasting.
The principal actor wasKing Hussein as head of theKingdom of Hejaz. He led what is now called theArab revolt, the principal objectives of which were self-rule and an end to Ottoman control of the region.
In reaction to theAssyrian Genocide and lured byBritish and Russian promises of an independent nation, theAssyrians led byAgha Petros of the Bit-Bazi,Malik Khoshaba of the Bit-Tiyari tribe and other tribal chiefs ofHakkari under the national leaderMar Shimun XXI Benyamin joined the Entente Powers and fought alongside the Allies against Ottoman forces, the Assyrians were known as theAssyrian volunteers orOur Smallest Ally[30][31][32]
During the peace conferences in Paris in 1919, the Assyrian delegation asked for a state inDiyarbekir Vilayet and northern Mesopotamia in Iraq, others requested a British protectorate inUpper Mesopotamia, northern Mosul, and Urmia. This was however rejected by Great Britain and the U.S. delegates. In 1924 the Assyrians tried to retake their ancestral lands in Hakkari resulting in anAssyrian rebellion that failed, after Turkey formally occupied Hakkari they expelled the last Christian inhabitants who still remained in the region[20]
In theearly twentieth century, Kurds, much like Arabs, were a diverse population, dispersed across a wide area and far from homogeneous in social status or geo-political outlook. Though many were committed proponents of Kurdish nationalism, this view was far from ubiquitous.[33] In 1914, many Kurds belonged to the Ottoman elite and Kurds often held high ranking and prominent offices within the Ottoman state.[34]
Kurdish Nationalists hoped that theAllies of World War I would aid them increating an independent Kurdish nation if they were to fight against the Ottomans, and undertookseveral uprisings throughout the war. Most of these, except for the uprisings of August 1917, were not supported by any of the allied powers.[35]
However, many Kurds remained loyal to and fought on behalf of the Ottoman Empire. The most notorious example beingthe Hamidiye, a mostly Kurdish elite cavalry division of the Ottoman army that fought in both the Caucucus and Persian campaigns and played a significant role in theArmenian genocide.[36] Regions with high Armenian revolutionary actions were targets for the Hamidiye,[37] who referred to an "Armenian Conspiracy" as justification for killing the Armenians.[38]According to some estimates, about ten to twenty thousand Armenians were slaughtered by the Hamidiye units.[39][40]
In other instances local Kurds joined with Turkish forces not out of loyalty but to share in the spoils taken from Armenian civilians. According to historianRaymond Kévorkian, while many nomadic Kurdish tribes actively participated in the genocide, settled Kurds rarely did so.[41]
Many Kurds also opposed the genocide and undertook personal efforts to rescue Armenian civilians.[42]

The Caucasus Campaign comprised armed conflicts between the Ottoman Empire and the allies, the forces of the latter includingAzerbaijan,Armenia, the Central Caspian Dictatorship, and the UK as part of the Middle Eastern theatre, or alternatively named, as part of the Caucasus Campaign during World War I. The Caucasus Campaign extended from the Caucasus to easternAsia Minor, reaching as far as Trabzon, Bitlis, Mush and Van. The warfare on land was accompanied by actions undertaken by the Russian Navy in theBlack Sea region of the Ottoman Empire.
On 23 February 1917, the Russian advance was halted following theRussian Revolution, and later the disintegratedRussian Caucasus Army was replaced by the forces of the newly established Armenian state, which comprised the previous Armenian volunteer units and the Armenian irregular units. During 1918 the region also saw the establishment of the Central Caspian Dictatorship, the Republic of Mountainous Armenia, and an Allied force namedDunsterforce which was composed of elite troops drawn from the Mesopotamian and Western Fronts.
The Ottoman Empire and German Empire fought each other at Batumi after the arrival of the German Caucasus Expedition whose prime aim was to secure oil supplies. On 3 March 1918, the conflict between the Ottoman Empire and Russia ended with theTreaty of Brest-Litovsk, and on 4 June 1918, the Ottoman Empire signed theTreaty of Batum with Armenia. However, the armed conflicts extended as the Ottoman Empire continued to engage with the Central Caspian Dictatorship, Republic of Mountainous Armenia, and British Empire forces from Dunsterforce until theArmistice of Mudros was signed on 30 October 1918.
Over 90,000 Ottoman troops were sent to the Eastern European Front in 1916, to participate inoperations in Romania in theBalkans Campaign. The Central Powers asked for these units to support their operations against the Russian army. Later, it was concluded that the deployment was a mistake, as these forces would have been better placed remaining to protect Ottoman territory against the massiveErzerum Offensive that the Russian army had begun.
The relocation of troops to the Eastern European Front was initiated by Enver. It was originally rejected by the German Chief of Staff,Erich von Falkenhayn, but his successor,Paul von Hindenburg, agreed to it, albeit with reservations. The decision was reached after theBrusilov Offensive, as the Central Powers were running short of men on the Eastern Front.
In the deployment, Enver sent theXV Army Corps to Galicia, theVI Army Corps to Romania, and theXX Army Corps and 177th Infantry Regiment to Macedonia in early 1916. The VI Corps took part in the collapse of the Romanian army in theRomanian Campaign, and were particularly valued for their ability to continue a high rate of advance in harsh winter conditions. The XV Corps was known to fight very well against the Russians in Galicia,[43] often inflicting on the Russians several times the casualties they took.[44]

After theYoung Turk Revolution and the establishment of theSecond Constitutional Era (Turkish:İkinci Meşrûtiyet Devri) on 3 July 1908, a major military reform started. Army headquarters were modernised. The Ottoman Empire was engaged in theTurco-Italian War andBalkan Wars, which forced more restructuring of the army, only a few years before the First World War.
From the outset, the Ottoman Army faced a host of problems in assembling itself. First of all, the size of the Ottoman Army was severely limited by division within the empire: non-Muslims were exempt from the military draft, and reliable ethnic Turks made up only 12 million of the empire's already relatively small population of 22 million, with the other 10 million being minorities of varying loyalty and military use. The empire was also very poor compared to the other powers in GDP, infrastructure, and industrial capacity. As a point of comparison the empire had only 5,759 km of railway, while France had 51,000 km of railway for a fifth of the land area. Ottoman coal production was negligible (826,000 tons in 1914 compared to 40,000,000 tons for France and 292,000,000 tons for Britain), while steel production was borderline non-existent.[45] There was only one cannon and small arms foundry in the empire, a single shell and bullet factory, and a single gunpowder factory, all of which were located in the Constantinople suburbs. The Ottoman economy was almost entirely agricultural, relying on products such as wool, cotton, and hides.[46]
During this period, the Empire divided its forces into armies. Each army headquarters consisted of a Chief of Staff, an operations section, intelligence section, logistics section and a personnel section. As a long established tradition in the Ottoman military, supply, medical and veterinary services were included in these armies. Before the war, the Turkish General Staff estimated that 1,000,000 men could be mobilized at one time and that 500,000 of these were available as mobile field armies, with the rest serving in garrisons, coastal defenses, and in servicing lines of communication and transportation.[47] Approximately 900 field guns were available for the mobile army, which was 280 below war establishment, though supplies of howitzers were generally sufficient. There were an additional 900 pieces of fixed or semifixed set-up in coastal and fortress garrisons across Adrianople, Erzurum, the Bosphorous, the Dardanelles, and the Catalca. Ammunition was low; there were only about 588 shells available per gun.[48] Additionally, the army estimated it needed several thousand more machine guns to fill its establishment; rifles were generally efficient at 1.5 million in stock, the army still needed another 200,000.
In 1914, before the Empire entered the war, the four armies divided their forces into corps and divisions such that each division had three infantry regiments and an artillery regiment. The main units were:First Army with fifteen divisions;Second Army with 4 divisions plus an independent infantry division with three infantry regiments and an artillery brigade;Third Army with nine divisions, four independent infantry regiments and four independent cavalry regiments (tribal units); and theFourth Army with four divisions.
In August 1914, of 36 infantry divisions organised, fourteen were established from scratch and were essentially new divisions. In a very short time, eight of these newly recruited divisions went through major redeployment. During the war, more armies were established;5th Army and6th Army in 1915,7th Army and8th Army in 1917, andKuva-i İnzibatiye[citation needed] and theArmy of Islam, which had only a single corps, in 1918.
By 1918, the original armies had been so badly reduced that the Empire was forced to establish new unit definitions which incorporated these armies. These were theEastern Army Group andYildirim Army Group. However, although the number of armies was increasing over the four years of the war, the Empire's resources of manpower and supplies were declining, so that theArmy Groups in 1918 were smaller than the armies of 1914. The Ottoman Army was still partially effective until the end of the war.
Most military equipment was manufactured in Germany or Austria, and maintained by German and Austrian engineers. Germany also supplied most of the military advisers; a force of specialist troops (theAsia Korps) was dispatched in 1917, and increased to a fighting force of two regiments in 1918. TheGerman Caucasus Expedition was established in the formerlyRussianTranscaucasia around early 1918 during theCaucasus Campaign. Its prime aim was to secure oil supplies for Germany and stabilise a nascent pro-GermanDemocratic Republic of Georgia. The new republic brought the Ottoman Empire and Germany into conflict, with exchanges of official condemnations between them in the final months of the war.

The Ottoman Empire established a new recruitment law on 12 May 1914. This lowered the conscription age from 20 to 18, and abolished the "redif" or reserve system. Active duty lengths were set at two years for the infantry, three years for other branches of the Army and five years for the Navy. These measures remained largely theoretical during the war.
Traditional Ottoman forces depended on volunteers from the Muslim population of the empire. Additionally, several groups and individuals in the Ottoman society volunteered for active duty during the World War, the major examples being the "Mevlevi" and the "Kadiri".
There were also units formed by Caucasian and Rumelian Turks, who took part in the battles in Mesopotamia and Palestine. Among Ottoman forces, volunteers were not only from Turkic groups; there were also smaller numbers of Arab and Bedouin volunteers who fought in the campaign against the British to capture the Suez Canal, and in Mesopotamia. Volunteers were considered unreliable by the organised army, due to a lack of training and a perception of mainly mercenary interests from the Arab and Bedouin volunteers. Heavy fighting also placed pressure on the Ottoman volunteer system.

Before the war, Russia had theRussian Caucasus Army, but almost half of this was redeployed to the Prussian front after the defeats at the battles ofTannenberg and theMasurian Lakes, leaving behind just 60,000 troops in this theatre. In the summer of 1914,Armenian volunteer units were established under the Russian Armed forces. Nearly 20,000 Armenian volunteers expressed their readiness to take up arms against the Ottoman Empire as early as 1914.[49] These volunteer units increased in size during the war, to the extent thatBoghos Nubar, in a public letter to theParis Peace Conference in 1919, stated that they numbered 150,000.[50]
TheAssyrian people of south east Anatolia, northern Mesopotamia and north western Persia also threw in their lot with the Russians and British, under the leadership ofAgha Petros andMalik Khoshaba.[22]

In 1914, there were someBritish Indian Army units located in the southern parts ofPersia. These units had extensive experience in dealing with dissident tribal forces. The British later established theMediterranean Expeditionary Force,British Dardanelles Army,Egyptian Expeditionary Force, and in 1917 they establishedDunsterforce underLionel Dunsterville, consisting of less than 1,000 Australian, British, Canadian and New Zealand troops accompanied by armoured cars, to oppose Ottoman and German forces in the Caucasus.
In 1916, anArab Revolt began in theHejaz. About 5,000 regular soldiers (mostly former prisoners of war of Arab origin) served with the forces of the revolt. There were also many irregular tribesmen under the direction of theEmir Feisal and British advisers. Of the advisers,T. E. Lawrence is the best known.

France sent theFrench Armenian Legion to this theatre as part of its largerFrench Foreign Legion. Foreign MinisterAristide Briand needed to provide troops for French commitment made in theSykes-Picot Agreement, which was still secret.[51]Boghos Nubar, the leader of theArmenian national assembly, met with Sir Mark Sykes and Georges-Picot.
GeneralEdmund Allenby, the commander of the Egyptian Expeditionary Force, extended the original agreement. The Armenian Legion fought in Palestine and Syria. Many of its volunteers were later released from the Legion to join their respective national armies.
TheArmenian national liberation movement commanded the ArmenianFedayee (Armenian:Ֆէտայի) during these conflicts. These were generally referred to asArmenian militia. In 1917, TheDashnaks established an Armenian Corps under the command of GeneralTovmas Nazarbekian which, with the declaration of theFirst Republic of Armenia, became the military core of this new Armenian state. Nazarbekian became the first Commander-in-chief.

Before the war, Russia established a volunteer system to be used in the Caucasus Campaign. In the summer of 1914,Armenian volunteer units led byAndranik Ozanian were established under the Russian Armed forces. As the Russian Armenian conscripts had already been sent to the European Front, this force was uniquely established from Armenians that were neither Russian subjects nor obliged to serve. The Armenian units were credited with no small measure of the success gained by the Russian forces, as they were natives of the region, adjusted to the climatic conditions, familiar with every road and mountain path, and had real incentives to fight.[52]
The Armenian volunteers were small, mobile, and well adapted to the semi-guerrilla warfare.[53] They did good work as scouts, but also took part in numerous pitched battles.[53]
In December 1914,Nicholas II of Russia visited the Caucasus Campaign. Addressing the head of theArmenian Church, andAlexander Khatisyan, president of theArmenian National Bureau inTiflis, he said:
From all countries Armenians are hurrying to enter the ranks of the glorious Russian Army, with their blood to serve the victory of the Russian Army... Let the Russian flag wave freely over the Dardanelles and the Bosporus. Let [...] the peoples [Armenian] remaining under the Turkish yoke receive freedom. Let the Armenian people of Turkey who have suffered for the faith of Christ receive resurrection for a new free life ....[54]
— Nicholas II of Russia
The forces used in the Middle Eastern theatre were not only regular army units which engaged in conventional warfare, but also irregular forces engaging in what is known today as "asymmetrical conflict".[citation needed]
Contrary to myth, it was notT. E. Lawrence or the British Army that conceptualised a campaign of internal insurgency against the Ottoman Empire in the Middle East: it was theArab Bureau of Britain'sForeign Office that devised theArab Revolt. The Arab Bureau had long felt it likely that a campaign instigated and financed by outside powers, supporting the breakaway-minded tribes and regional challengers to the Ottoman government's centralised rule of their empire, would pay great dividends in the diversion of effort that would be needed to meet such a challenge. The Ottoman authorities devoted far more resources to contain the threat of such an internal rebellion than the Allies devoted to sponsoring it.[citation needed]
Germany established its ownIntelligence Bureau for the East just before the outbreak of war. It was dedicated to promoting and sustaining subversive and nationalist agitations in theBritish Indian Empire, as well as in the Persian andEgyptian satellite states. Its operations in Persia, aimed at fomenting trouble for the British in thePersian Gulf, were led byWilhelm Wassmuss,[27] a German diplomat who became known as the "German Lawrence of Arabia" or "Wassmuss of Persia".[citation needed]
The Ottoman Empire made a secretGerman–Ottoman alliance on 2 August 1914, followed by another treaty with Bulgaria. The Ottoman War ministry developed two major plans.Bronsart von Schellendorf, a member of the German military mission to the Ottoman Empire who had been appointed Assistant Chief of the Ottoman General Staff, completed a plan on 6 September 1914 by which the Fourth Army was to attack Egypt and the Third Army would launch an offensive against the Russians in Eastern Anatolia.[citation needed]
There was opposition to Schellendorf among the Ottoman army. The most voiced opinion was that Schellendorf planned a war which benefitted Germany, rather than taking into account the conditions of the Ottoman Empire.Hafiz Hakki Pasha presented an alternative plan, which was more aggressive, and concentrated on Russia. It was based on moving forces by sea to the eastern Black Sea coast, where they would develop an offensive against Russian territory. Hafiz Hakki Pasha's plan was shelved because the Ottoman Army lacked the resources. Schellendorf's "Primary Campaign Plan" was therefore adopted by default.[citation needed]
As a result of Schellendorf's plan, most of the Ottoman operations were fought in Ottoman territory, with the result that in many cases they directly affected the Empire's own people. The later view was that the resources to implement this plan were also lacking, but Schellendorf organised the command and control of the army better, and positioned the army to execute the plans. Schellendorf also produced a better mobilisation plan for raising forces and preparing them for war. The Ottoman War Ministry's archives contain war plans drafted by Schellendorf, dated 7 October 1914, which include details regarding Ottoman support to the Bulgarian army, a secret operation against Romania, and Ottoman soldiers landing inOdessa andCrimea with the support of the German Navy.[citation needed]
Such was the German influence on Turkey's operations during the Palestine campaign that most of the staff posts in theYıldırım Army Group were held by German officers. Even the headquarters correspondence was produced in German. This situation ended with the final defeat in Palestine and the appointment of Mustafa Kemal to command the remnants of the Yildirim Army Group.
During July 1914 there were negotiations between theCommittee of Union and Progress (CUP) and Ottoman Armenians at theArmenian congress at Erzurum. The public conclusion of the congress was "Ostensibly conducted to peacefully advance Armenian demands by legitimate means".[55] Erickson claims that the CUP regarded the congress as a cause of Armenian insurrection.[56][clarification needed] and that after this meeting, the CUP was convinced of the existence of strong Armenian–Russian links, with detailed plans to detach the region from the Ottoman Empire.[56]
On 29 October 1914, the Ottoman Empire's first armed engagement with the Allies occurred when the German battlecruiserSMS Goeben and light cruiserSMS Breslau, having beenpursued into Turkish waters and transferred to the Ottoman navy,shelled the Russian Black Sea port of Odessa.[citation needed]
Following the shelling of Odessa, Russia declared war on the Ottoman Empire on 2 November 1914. The British Navy attacked the Dardanelles on 3 November. Britain and France declared war on 5 November.[57] TheOttoman declaration of Jihad was drafted on 11 November and first publicized on 14 November.[58]
First Lord of the AdmiraltyWinston Churchill put forward his plans for a naval attack on the Ottoman capital, based at least in part on what turned out to be erroneous reports regarding Ottoman troop strength, as prepared by LieutenantT. E. Lawrence. He reasoned that the Royal Navy had a large number of obsolete battleships which might be made useful, supported by a token force from the army for routine occupation tasks. The battleships were ordered to be ready by February 1916.[citation needed]
At the same time, the Ottoman Fourth Army was preparing a force of 20,000 men under the command of the Ottoman Minister of the Marine, Djemal Pasha, to take the Suez Canal. The attack on Suez was suggested by War Minister Enver Pasha at the urging of their German ally. The chief of staff for the Ottoman Fourth Army was the Bavarian Colonel Kress von Kressenstein, who organised the attack and arranged supplies for the army as it crossed the desert.[citation needed]
On 1 November, theBergmann Offensive was the first armed conflict of the Caucasus Campaign. The Russians crossed the frontier first, and planned to captureDoğubeyazıt andKöprüköy.[59] On their right wing, the Russian I Corps moved from Sarikamish toward Köprüköy. On the left wing, the Russian IV Corps moved from Yerevan to the Pasinler Plains. The commander of the Ottoman Third Army,Hasan Izzet, was not in favour of an offensive in the harsh winter conditions, but his plan to remain on the defensive and to launch a counterattack at the right time was overridden by the War Minister Enver Pasha.[citation needed]
On 6 November, a British naval force bombarded the old fort atFao. TheFao Landing of BritishIndian Expeditionary Force D (IEF D), consisting of the6th (Poona) Division led by Lieutenant GeneralArthur Barrett, with SirPercy Cox as political officer, was opposed by 350 Ottoman troops and four cannons. On 22 November, the Britishoccupied the city of Basra against a force of 2900 Arab conscripts of theIraq Area Command commanded by Suphi Pasha. Suphi Pasha and 1,200 men were captured. The main Ottoman army, under the overall command ofKhalil Pasha, was located about 440 kilometres (270 mi) to the north-west, around Baghdad. It made only weak attempts to dislodge the British.
On 7 November, the Ottoman Third Army commenced its Caucasus offensive with the participation of theXI Corps and all cavalry units supported by the Kurdish Tribal Regiment. By 12 November,Ahmet Fevzi Pasha'sIX Corps reinforced with the XI Corps on the left flank supported by the cavalry, began to push the Russians back. The Russians were successful along the southern shoulders of the offensive, where Armenian volunteers were effective and tookKaraköse and Doğubeyazıt.[60] By the end of November, the Russians held a salient 25 kilometres (16 mi) into Ottoman territory along the Erzurum-Sarikamish axis.[citation needed]
SheikhMubarak Al-Sabah, the ruler of Kuwait, sent a force to Umm Qasr, Safwan, Bubiyan, and Basra to expel Ottoman forces from the area. In exchange the British government recognised Kuwait as an "independent government under British protection."[61] There is no report on the exact size and nature of Mubarak's attack, though Ottoman forces did retreat from those positions weeks later.[62] Mubarak removed the Ottoman symbol that was on the Kuwaiti flag and replaced it with "Kuwait" written in Arabic script.[62] Mubarak's participation, as well as his previous exploits in obstructing the completion of the Baghdad railway, helped the British safeguard the Persian Gulf from Ottoman and German reinforcements.[63]
In December, at the height of the Battle of Sarikamish, General Myshlaevsky ordered the withdrawal of Russian forces from the Persian Campaign to face Enver's offensive. Only one brigade of Russian troops under the command of the Armenian GeneralNazarbekoff and one battalion of Armenian volunteers remained scattered throughoutSalmast andUrmia. While the main body of Ottoman troops were preparing for the operation in Persia, a small Russian group crossed the Persian frontier. After repulsing a Russian offensive toward Van-Persia mountain crossings, the Van Gendarmerie Division, a lightly equipped paramilitary formation commanded by Major Ferid, chased the Russians into Persia.[citation needed]
On 14 December, the Van Gendarmerie Division occupied the city ofKotur in the Persian Campaign. Later, it proceeded towardsKhoy. It was supposed to keep this passage open forKazım Bey's5th Expeditionary Force andHalil Bey's1st Expeditionary Force, who were to move towards Tabriz from the bridgehead established at Kotur. However, the Battle of Sarıkamısh depleted the Ottoman forces and these expeditionary forces were needed elsewhere.
On 29 December, the Ottoman Third Army received the order to advance towards Kars.Enver Pasha assumed personal command of the Third Army and ordered his forces to move against the Russian troops, beginning theBattle of Sarikamish. In the face of the Third Army's advance, Governor Vorontsov planned to pull the Russian Caucasus Army back to Kars. GeneralNikolai Yudenich ignored Vorontsov's order.

On 2 January,Süleyman AskeriBey assumed the Iraq Area Command. Enver Pasha realised the mistake of underestimating the importance of the Mesopotamian campaign. The Ottoman Army did not have any other resources to move to this region, as an attack on Gallipoli was imminent. Süleyman Askeri Bey sent letters to Arab sheiks in an attempt to organise them to fight against the British.
On 3 January, at theBattle of Qurna, Ottoman forces tried to retake the city of Basra. They came under fire from Royal Navy vessels on the riverEuphrates, while British troops managed to cross the riverTigris. Judging that Basra's earthworks were too strong to be taken, the Ottomans surrendered the town ofAl-Qurnah and retreated toKut.
On 6 January, the Third Army headquarters found itself under fire. Hafiz Hakki Pasha ordered a total retreat at the Battle of Sarikamish. Only 10% of the army managed to retreat to its starting position. Enver gave up command of the army. During this conflict, Armenian detachments challenged the Ottoman operations at the critical times: "the delay enabled the Russian Caucasus Army to concentrate sufficient force around Sarikamish".[64]
The British and France asked Russia to relieve the pressure on Western front, but Russia needed time to organise its forces. The operationsin the Black Sea gave them the chance to replenish their forces; also theGallipoli Campaign drew many Ottoman forces from the Russian and other fronts.[59] In March 1915, the Ottoman Third army received reinforcements amounting to a division from the First and Second Armies.
On 19 February, a strong Anglo-French fleet, including the British battleshipHMS Queen Elizabeth, bombarded artillery positions along the coast around the Dardanelles. AdmiralSackville Carden sent a cable to Churchill on 4 March, stating that the fleet could expect to arrive in Constantinople within fourteen days.[65] On 18 March the first major attack was launched. The fleet, comprising 18 battleships and an array of cruisers and destroyers, sought to target the narrowest point of the Dardanelles where the straits are just a mile wide.
TheBouvet exploded in mysterious circumstances, causing it to capsize with its entire crew aboard. Minesweepers, manned by civilians and under constant fire from Ottoman guns, retreated leaving the minefields largely intact. The battleshipHMS Irresistible and battlecruiserHMS Inflexible both sustained critical damage from mines, although there was confusion during the battle whether torpedoes were to blame. The battleshipHMS Ocean, sent to rescue theIrresistible, was itself mined and both ships eventually sank. The French battleshipsSuffren andGaulois were also badly damaged. The losses prompted the Allies to cease any further attempts to force the straits by naval power alone.
In February, General Yudenich was promoted to command the Russian Caucasus Army, replacingAleksandr Zakharevich Myshlayevsky. On 12 February, the commander of the Ottoman Third Army, Hafiz Hakki Pasha, died of typhus and was replaced by Brigadier GeneralMahmut Kamil Paşa. Kamil undertook the task of putting the depleted Third Army in order.
The Ottoman Empire tried to seize the Suez Canal in Egypt with theFirst Suez Offensive, and they supported the recently deposedAbbas II of Egypt, but were defeated by the British in both aims.
Following their unexpected success in theMesopotamia Campaign, the British command decided on more aggressive operations. In April 1915, generalSir John Nixon was sent to take command. He ordered Major GeneralCharles Vere Ferrers Townshend to advance toKut or even toBaghdad if possible. Enver Pasha worried about the possible fall of Baghdad, and sent the German GeneralColmar Freiherr von der Goltz to take command.
On 12 April, Süleyman Askeri attacked the British camp at Shaiba with 3,800 troops early in the morning. These forces, mainly provided by Arab sheiks, achieved nothing. Süleyman Askeri was wounded. Disappointed and depressed, he shot himself at the hospital in Baghdad.
On 20 April, theSiege of Van began. On 24 April, Talat Pasha promulgated theorder on April 24 (known by the Armenians as theRed Sunday) which stated that the Armenians in this region were led by Russians and had rebelled against Ottoman government.
The Allies began their amphibious assault on the Gallipoli Peninsula on the European side of the Dardanelles the following day. The troops were able to land, but could not dislodge the Ottoman forces even after months of battle that caused the deaths of an estimated 131,000 soldiers, and 262,000 wounded. Eventually they withdrew. The campaign represented something of a coming of age forAustralia andNew Zealand, who celebrate 25 April asANZAC Day.Kemal Atatürk, who later became the first leader of modern Turkey, distinguished himself as a lieutenant colonel at Gallipoli.
On 6 May, General Yudenich began an offensive into Ottoman territory. One wing of this offensive headed towardsLake Van to relieve its Armenian defenders. TheFedayee turned over the city to the Russians. On 21 May, General Yudenich received the keys to the city and its citadel, and confirmed theArmenian provisional government in office withAram Manukian as governor. With Van secure, fighting shifted farther west for the rest of the summer.[24]
On 6 May, the Russian second wing advanced through the Tortum Valley towards Erzurum after the weather turned milder. The Ottoman 29th and 30th Divisions managed to stop this assault. TheX Corps counter-attacked the Russian forces. On the southern front, the Ottomans were not as successful as they had been in the north.
The city ofManzikert had already fallen on 11 May. The Ottomans' supply lines were being cut, as the Armenian forces caused additional difficulties behind the lines. The region south of Lake Van was extremely vulnerable. During May, the Ottomans had to defend a line of more than 600 kilometres (370 mi) with only 50,000 men and 130 pieces of artillery. They were heavily outnumbered by the Russians.
On 27 May, during the high point of the Russian offensive, the Ottoman parliament passed theTehcir Law. Talat Pasha, the Interior Minister, ordered a forced deportation of all Armenians from the regions under Ottoman control.
On 19 June, the Russians launched another offensive northwest of Lake Van. Commanded by Oganovski, they advanced into the hills west of Malazgrit, but had underestimated the size of the Ottoman forces. They were surprised by a large Ottoman force at theBattle of Manzikert. They were not aware that theOttoman IX Corps, together with the 17th and 28th Divisions, was moving to Mush also.
The 1st and 5th Expeditionary Forces were positioned to the south of the Russian offensive force and a "Right Wing Group" was established under the command of Brigadier General Abdülkerim Paşa. This group was independent from the Third Army, and Abdülkerim Paşa was reporting directly to Enver Paşa.
On 24 September,General Yudenich became the supreme commander of all Russian forces in the region. This front was quiet from October until the end of the year. Yudenich used this period to reorganise. By 1916, Russian forces in the theatre had grown to 200,000 men and 380 pieces of artillery.
On the other side the situation was very different; the Ottoman High Command failed to make up the losses during this period. The war in Gallipoli was using up all available resources and manpower. The IX, X and XI Corps could not be reinforced, and the 1st and 5th Expeditionary Forces were deployed to Mesopotamia. Enver Pasha, after failing to achieve his ambitions in the Caucasus, and possibly recognising the dire situation on other fronts, decided that the Caucasus front was of secondary importance.
The rapid advance of the British up the river[clarification needed] changed some of the Arab tribes' perception of the conflict. Realising that the British had the upper hand, many of them joined the British efforts. They raided Ottoman military hospitals and massacred the soldiers in Amara.
On 22 November, Townshend and von der Goltz fought thebattle at Ctesiphon. The battle was inconclusive, as both the Ottomans and the British retreated from the battlefield. Townshend halted and fortified the position atKut-al-Amara, and on 7 December with his forces were surrounded thesiege of Kut began. Von der Goltz helped the Ottoman forces build defensive positions around Kut, and established new fortified positions down river to fend off any attempt to rescue Townshend. General Aylmer made three attempts to break the siege, but each effort was unsuccessful. Townshend surrendered his entire force on 29 April 1916.[66]
In December, the British government continued their attempts to cultivate favour with Ibn Saud via its secret agent, CaptainWilliam Shakespear, but this was abandoned after Shakespear's death at theBattle of Jarrab. Instead, the British transferred support to Ibn Saud's rivalSharif Hussein bin Ali, leader of theHejaz, with whom the Saudis were almost constantly at war.Lord Kitchener also appealed to Hussein bin Ali, Sharif of Mecca for assistance in the conflict; Hussein wanted political recognition in return.An exchange of letters withHenry McMahon assured him that his assistance would be rewarded after the war by granting him control of the territory between Egypt andPersia, with the exception of imperial possessions and interests in Kuwait, Aden, and the Syrian coast. Britain entered into the Treaty of Darin, which made the lands of the House of Saud a British protectorate. Ibn Saud pledged to again make war against Ibn Rashid, who was an ally of the Ottomans, and in exchange was given a monthly stipend.
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Organizer of the popular forces against the Russian forces was Heydar Latifiyan who had been one of the supporters of thePersian Constitutional Revolution. The Russians advanced to Qazvin. With the possibility of the fall of Tehran,Parliament of Iran lost its majority and was dissolved. When Russia gave Iran an ultimatum to expel Morgan Shuster in the first year of the First World War, and the forces of this country entered Iran and came to Rabat Karim and attacked the forces of the National Defense Committee. Hassan Azam Qudsi (Azam Al-Wazara) from friendsHassan Modarres writes in his memoirs called "My Memories" about the first military encounter between the Russians and the national forces:
From one side, the Russian troops reach the village of Kolmeh (Fajr town), which is located between the Rabat Karim road and Tehran, and the local fighters are surrounded from three sides. The Russians start bombarding the area from almost a mile away. It is possible, but all the people survive. However, in the evening, the infantry riders of the Russian army come closer and the war with swords begins, and after a bloody clash, 70 people are killed.
Heyder was also killed like the rest of his comrades. According to the traditions of the local people, the Russians made it difficult to identify the bodies by cutting off the heads of the dead. The only identifiable body among the 70 people was Heydar Latifiyan, whose body was buried near an Imamzadeh above the village ofVahnabad.

In 1916, a combination of diplomacy and genuine dislike of the new leaders of the Ottoman Empire (theThree Pashas) convinced Sharif Hussein bin Ali ofMecca to begin a revolt. He gave the leadership of this revolt to two of his sons:Faisal andAbdullah, though the planning and direction for the war was largely the work ofLawrence of Arabia.
The Russian offensive in northeasternTurkey started with a victory at theBattle of Koprukoy and culminated with thecapture of Erzurum in February and Trabzon in April. By theBattle of Erzincan the OttomanThird Army was no longer capable of launching an offensive nor could it stop the advance of the Russian Army.
The Ottoman forces launched a second attack across theSinai with the objective of destroying or capturing the Suez Canal. Both this and the earlier attack (1915) were unsuccessful, though not very costly by the standards of the Great War. The British then went on the offensive, attacking east into Palestine. However, in 1917 two failed attempts to capture the Ottoman fort of Gaza resulted in sweeping changes to the British command and the arrival ofGeneral Allenby, along with many reinforcements.

British Empire forces reorganised andcaptured Baghdad in March 1917. On 16 December, theArmistice of Erzincan (Erzincan Cease-fire Agreement) was signed which officially brought the end of hostilities between the Ottoman Empire and the Russians. TheSpecial Transcaucasian Committee also endorsed the agreement.
TheSinai and Palestine Campaign was dominated by the success of the revolt, which greatly aided General Allenby's operations. Late in 1917, Allenby'sEgyptian Expeditionary Force smashed the Ottoman defences and capturedGaza, and then capturedJerusalem just before Christmas. While strategically of lesser importance to the war, this event was key in the subsequent creation ofIsrael as a separate nation in 1948.

The Allied Supreme War Council believed the war weary Ottoman Empire could be defeated with campaigns in Palestine and Mesopotamia,[67] but the GermanSpring Offensive in France delayed the expected Allied attack.[67] General Allenby was given brand new divisions recruited from India.[67]
T. E. Lawrence and his Arab fighters staged many hit-and-run attacks on supply lines and tied down thousands of soldiers in garrisons throughout Palestine, Jordan, and Syria.[68]
On 3 March the Grand VizierTalat Pasha signed theTreaty of Brest-Litovsk with theRussian SFSR which stipulated that Bolshevik Russia cedeBatum,Kars, andArdahan to the Ottoman Empire. TheTrabzon Peace Conference was held between March and April between the Ottoman Empire and the delegation of the Transcaucasian Diet (Transcaucasian Sejm) and government. The Treaty of Brest-Litovsk united the Armenian and Georgian territories.[69]
Assyrians attacked the Fortress of Charah on March 16, 1918, after the murder ofMar Benyamin Shimun (killed on March 3).Simko Shikak, who was responsible for the murder of the Assyrian patriarch Mar Shimun was staying in the fortress. The fortress had never been conquered despite numerous attempts by the Persian government. During the battle, Simko was panic stricken after seeing the Assyrians rip apart his forces. While the battle was going on, Simko managed to flee, abandoning his men. After one day of fighting, the Kurds were decisively defeated. It is said that the river in Charah was completely red from the deadShikak fighters.[70]
Under the command ofAgha Petros, the Assyrians had quite a few successful engagements over theOttoman forces. Most notably atSuldouze where Petros' 1,500 horsemen overcame the forces ofKheiri Bey's (8,000 men).[71][72] Petros also defeated the Ottomans in a major engagement atSauj Bulak and drove them back toRowanduz.[73]
TheFirst Republic of Armenia declared war on the Ottoman Empire.[69] In early May 1918, the Ottoman army faced the Armenian Corps ofArmenian National Councils, which soon declared the First Republic of Armenia. The Ottoman army capturedTrabzon,Erzurum, Kars,Van, and Batum. The conflict led to theBattle of Sardarapat, theBattle of Kara Killisse (1918), and theBattle of Bash Abaran.[74]
Although the Armenians managed to inflict a defeat on the Ottomans at theBattle of Sardarapat, the fight with the First Republic of Armenia ended with theTreaty of Batum in June 1918. Throughout the summer of 1918, under the leadership ofAndranik Ozanian, Armenians in the mountainous Nagorno-Karabakh region resisted the Ottoman 3rd army and established theRepublic of Mountainous Armenia.[74] TheArmy of Islam, consisting of 14,000 men, avoided Georgia and marched toBaku, driving out the 1,000 Australian, British, Canadian and New Zealand troops in 14 September 1918 at theBattle of Baku.[75]
In September 1918, General Allenby launched theBattle of Megiddo, with theJewish Legion under his command,[76] forcing Ottoman troops into a full scale retreat.[77]
On 30 October 1918, theArmistice of Mudros was signed aboardHMS Agamemnon inMudros port on the island ofLemnos between the Ottoman Empire and the Triple Entente. Ottoman operations in the active combat theatres ceased.

On 13 November 1918, theOccupation of Constantinople (present dayIstanbul), the capital of the Ottoman Empire, occurred when French troops arrived, followed by British troops the next day. The occupation had two stages: thede facto stage from 13 November 1918 to 20 March 1920, and thede jure stage from de facto to the days following theTreaty of Lausanne. The occupation of Istanbul, along with theoccupation of İzmir, contributed to theestablishment of the Turkish national movement and led to theTurkish War of Independence.[78]
On 18 January 1919, peace negotiations began with theParis Peace Conference. The negotiations continued at theConference of London, but the treaty took definite shape only after the premiers' meeting at theSan Remo conference in April 1920. France, Italy, and Great Britain had been secretly planning thepartitioning of the Ottoman Empire as early as 1915. The Ottoman Government representatives signed theTreaty of Sèvres on 10 August 1920, but the treaty was not sent to theOttoman Parliament for ratification, as the Parliament had been abolished on 18 March 1920 by the British. As a result, the treaty was never ratified by the Ottoman Empire.[79][80] The Treaty of Sèvres was annulled in the course of the Turkish War of Independence, and the parties signed and ratified the supersedingTreaty of Lausanne in 1923.
On 3 March 1924, theOttoman Caliphate was abolished whenKemal Atatürkdeposed the last caliph,Abdul Mejid II.
Allied military losses are placed around 1,000,000 including killed, wounded, captured or missing.[citation needed] This includes 303,000 British Empire and French casualties in Gallipoli (including 187,959 battle casualties),[81] 168,000+ British Empire casualties in Sinai-Palestine (including 61,877 battle casualties),[82] at least 140,000 Russian casualties in the Caucasus (including 119,000 battle casualties), and 256,000 British Empire casualties in Mesopotamia (including 85,197 battle casualties),[83] as well as additional Russo-British losses in Persia. Most of the British casualties were non-battle casualties; total British battle casualties inflicted by the Ottomans were estimated as 264,000 by Field Marshal Lord Carver.[84] Armenian and Assyrian insurgent losses are unknown. At least 20,000 Arab rebel troops were killed in the Arab Revolt.[85]
Estimates for Ottoman military casualties vary widely, as the disintegration of the Ottoman bureaucracy and government meant 1,565,000 men simply became unaccounted for in the records following the end of the war.[86] The Ottoman official casualty statistics published in 1922 were 325,000 dead (50,000 killed, 35,000 died of wounds, 240,000 died of disease), 400,000 wounded, and an unknown number of prisoners. The United States War Department used the same killed and wounded figures, and estimated that 250,000 Ottoman soldiers had gone missing or become prisoners before the end of the war, for a total of 975,000 casualties.[87] American historian Edward J. Erickson, based on non-published individual World War I campaign histories in the Ottoman Archives, estimated Ottoman military casualties at 1,680,701: 771,844 dead/missing (175,220 killed in action, 68,378 died of wounds, 61,487 missing action, and 466,759 deaths due to disease), 695,375 wounded (total of 763,753 wounded including those who died of wounds and 303,150 actually listed in records; the author assumes these are only the seriously wounded, and estimates the rest), and 145,104 prisoners of war. The very high ratio of disease deaths to combat deaths is attributed to the breakdown of the Ottoman medical services, which resulted in afflictions that would normally be treated after evacuation from the theater in the British army often being fatal in the Ottoman army.[88] Including those who died of disease, 3,515,471 Ottoman troops fell sick during World War I.[89]
The significance of disease on this front can be best illustrated by comparing British the number of hospitalizations from disease/injury (frostbite, trench foot, etc.) in this theater to the Western Front. In France and Flanders, 2,690,054 British Empire troops were killed, wounded, died of wounds, missing, or captured, while there were 3,528,486 hospitalizations due to "non-battle casualties", a rate of 1.3 NBCs for every 1 battle casualty. In Mesopotamia there were 82,207 troops killed, wounded, died of wounds, missing, or captured, and 820,418 hospitalizations for sickness or injury, while in theSinai and Palestine Campaign 51,451 men became battle casualties (not counting Indians) and 503,377 were hospitalized as non-battle casualties. In both cases, the rate is approximately 10 NBCs for every 1 battle casualty. Additionally, while by the listed numbers the Mesopotamia and Sinai-Palestine campaigns had only had 5% the battle casualties of the Western Front (136,658 v 2,690,054), they had over 70% of the disease deaths (22,693+ v 32,098).[90]
Total Ottoman losses including civilians are recorded as being almost as high as 25% of the population, approximately 5 million deaths out of population of 21 million.[91] The 1914 census gave 20,975,345 as the population size of the Ottoman Empire. Of these 15,044,846 were from the Muslimmillet, 187,073 were from the Jewish millet, 186,152 did not belong to any millet and the remainder were spread across other millets.[92] Turkish professor Kamer Kasim has stated that the cumulative percentage was actually 26.9% of the population (1.9% higher than the 25% reported by Western sources), the highest proportion of all the countries that took part in World War I.[93] This increase of 1.9% represents an additional 399,000 civilians in the total number.[citation needed]
Not counting those later lost to the enemy, the Ottomans captured 1,314 pieces of artillery in World War I (mostly pieces in the 87 mm to 122 mm range). Most of these were Russian pieces, but this also included some of Romanian, German, and Japanese origin. Captured guns made up a significant portion of overall Ottoman artillery strength by the end of the war.[94]
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:4 was invoked but never defined (see thehelp page).The major role played by "the" Kurds, which is stressed by Turkish historiography and also by many Western scholars, turns out, upon examination, to be much less clear-cut than has been affirmed. Indeed, it comes down to the active participation of nomadic Kurdish tribes and only rarely involves sedentary villagers, who were encouraged by the Special Organization to take what they could from deportees already stripped of their most valuable assets. There can be no doubt that Turkish historiography ultimately contaminated independent scholars who were not necessarily in a position to assess the accuracy of this dogma that had its practical uses for those seeking to shake off the burden of a violent past at the expense of a group that is itself stigmatized in our day.