| Battle of Diu | |||||||
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| Part of theMamluk–Portuguese conflicts,Gujarati–Portuguese conflicts andOttoman-Portuguese confrontations | |||||||
 Notable victory achieved by the Viceroy D. Francisco de Almeida against the navies of the Sultan of Egypt and the Kings of Cambay and Calicut.Lithograph by Maurício José do Carmo Sendim, 1840 | |||||||
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| Belligerents | |||||||
 Portuguese Empire | |||||||
| Commanders and leaders | |||||||
| DomFrancisco de Almeida | |||||||
| Strength | |||||||
| Casualties and losses | |||||||
332 total[1]
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  Diu Diu (Gujarat) Show map of Gujarat | |||||||
TheBattle of Diu was anaval battle fought on 3 February 1509 in theArabian Sea, in the port ofDiu, India, between thePortuguese Empire and a joint fleet of theSultan of Gujarat, theMamlûk Burji Sultanate of Egypt and theZamorin ofCalicut.[4][5][6]
The Portuguese victory was critical: the great Muslim alliance was soundly defeated, easing the Portuguese strategy of controlling theIndian Ocean to route trade down theCape of Good Hope, circumventing the historicalspice trade controlled by theArabs and theVenetians through the Red Sea and Persian Gulf. After the battle, theKingdom of Portugal rapidly captured several key ports in the Indian Ocean includingGoa,Ceylon,Malacca,Bom Baim andOrmuz. The territorial losses crippled theMamluk Sultanate and theGujarat Sultanate. The battle catapulted the growth of thePortuguese Empire and established its political dominance for more than a century. Portuguese power in the East would begin to decline with thesackings of Goa and Bombay-Bassein,Portuguese Restoration War and theDutch colonisation of Ceylon.
The Battle of Diu was abattle of annihilation similar to theBattle of Lepanto and theBattle of Trafalgar, and one of the most important in worldnaval history, for it marks the beginning of European dominance over Asian seas that would last until theSecond World War.[7]
Just two years afterVasco da Gama reached India by sea, the Portuguese realized that the prospect of developing trade such as that which they had practiced in West Africa had become an impossibility, due to the opposition of Muslim merchant elites in the western coast of India, who incited attacks against Portuguesefeitorias, ships, and agents; sabotaged Portuguese diplomatic efforts; and led themassacre of the Portuguese in Calicut in 1500.[8]
Thus, the Portuguese signed an alliance with a sworn enemy of Calicut instead, the Raja ofCochin, who invited them to establishheadquarters. TheZamorin of Calicut invaded Cochin in response, but the Portuguese were able to devastate the lands and cripple the trade of Calicut, then the main exporter of spices back to Europe, through theRed Sea. In December 1504, the Portuguese destroyed theZamorin's yearly merchant fleet, bound for Egypt and laden with spices.[9]
WhenKing Manuel I of Portugal received news of these developments, he decided to nominateDom Francisco de Almeida as the first viceroy of India with expressed orders not just limited to safeguarding Portuguesefeitorias, but also to curb hostile Muslim shipping.[10] Dom Francisco departed from Lisbon in March 1505 with twenty ships and his 20-year-old son, Dom Lourenço, who was himself nominatedcapitão-mor do mar da Índia or captain-major of the sea of India.[11]
Portuguese intervention was seriously disrupting Muslimtrade in the Indian Ocean, threateningVenetian interests as well, as the Portuguese became able to undersell the Venetians in the spice trade in Europe.
Unable to oppose the Portuguese, the Muslim communities of traders in India as well as the sovereign ofCalicut, theZamorin, sent envoys to Egypt pleading for aid against the Portuguese.[2]
TheMamluk Sultanate of Egypt was, in the beginning of the 16th century, the main middleman between the spice producing regions of India, and the Venetian buyers in the Mediterranean, mainly inAlexandria, who then sold the spices in Europe at a great profit. Egypt was otherwise mostly an agrarian society with little ties to the sea.[12]Venice broke diplomatic relations with Portugal and started looking for ways to counter its intervention in the Indian Ocean, sending an ambassador to the Mamluk court and suggested that "rapid and secret remedies" be taken against the Portuguese.[13]
Mamluk soldiers had little expertise in naval warfare, so the Mamluk Sultan,Al-Ashraf Qansuh al-Ghawri requested Venetian support, in exchange for lowering tariffs to facilitate competition with the Portuguese.[13] Venice supplied the Mamluks with Mediterranean-type carracks and war galleys manned by Greek sailors, which Venetianshipwrights helped disassemble inAlexandria and reassemble on the Suez. The galleys could mount cannon fore and aft, but not along the gunwales because the guns would interfere with the rowers. The native ships (dhows), with their sewn wood planks, could carry only very light guns.
Command of the expedition was entrusted to aKurdishMamluk, former governor ofJeddah, Amir Hussain Al-Kurdi,Mirocem in Portuguese. The expedition (referred to by the Portuguese the generic term "therumes"[14]) included not only Egyptian Mamluks, but also a large number of Turkish,Nubian and Ethiopian mercenaries as well as Venetian gunners[12] Hence, most of the coalition's artillery were archers, whom the Portuguese could easily outshoot.
The fleet left Suez in November 1505, 1100 men strong.[12] They were ordered to fortifyJeddah against a possible Portuguese attack and quell rebellions around Suakin and Mecca. They had to spend the monsoon season on the island ofKamaran and landed atAden at the tip of theRed Sea, where they got involved in costly local politics with theTahirid Emir, before finally crossing the Indian Ocean.[15]Hence only in September 1507 did they reachDiu, a city at the mouth of theGulf of Khambhat, in a journey that could have taken as little as a month to complete at full sail.[16]
At the time of the arrival of the Portuguese in India, the Gujarati were the main long distance dealers in the Indian Ocean, and an essential intermediary in east–west trade, betweenEgypt andMalacca, mostly trading cloths and spices. In the 15th century, the Sultan of Gujarat nominatedMalik Ayyaz, a former bowman and slave of possibleGeorgian orDalmatian origin, as the governor of Diu. A cunning and pragmatic ruler, Malik Ayyaz turned the city into the main port of Gujarat (known to the Portuguese asCambaia) and one of the main entrepôts between India and thePersian Gulf, avoiding Portuguese hostility by pursuing a policy of appeasement and even alignment – up until Hussain unexpectedly sailed into Diu.[17]
Malik Ayyaz received Hussain well, but besides the Zamorin of Calicut, no other rulers of the Indian subcontinent were forthcoming against the Portuguese, unlike what the Muslim envoys to Egypt had promised. Ayyaz himself realized the Portuguese were a formidable naval force whom he did not wish to antagonize. He could not, however, reject Hussain for fear of retaliation from the powerful Sultan of Gujarat – besides obviously Hussain's own forces now within the city. Caught in a double bind, Ayyaz decided to only cautiously support Hussain.[18]
In March 1508, Hussain's and Ayyaz's fleets sailed south and clashed with Portuguese ships in a three-day naval engagement within the harbour of Chaul. The Portuguese commander was the captain-major of the seas of India,Lourenço de Almeida, tasked with overseeing the loading of allied merchant ships in that city and escorting them back to Cochin.[19]
Although the Portuguese were caught off guard (the distinctively European-like ships of Hussein were at first thought to belong to the expedition of Afonso de Albuquerque, assigned to the Arabian Coast), the battle ended as aPyrrhic victory for the Muslims, who suffered too many losses to be able to proceed towards thePortuguese headquarters in Cochin.[20] Despite fortuitously sinking the Portuguese flagship, the rest of the Portuguese fleet escaped, while Hussain himself barely survived the encounter because of the unwilling committal of Malik Ayyaz to the battle. Hussain was left with no other choice but to return to Diu with Malik Ayyaz and prepare for a Portuguese retaliation. Hussain reported this battle back to Cairo as a great victory; however, theMirat Sikandari, a contemporaryPersian account of the Kingdom of Gujarat, details this battle as a minor skirmish.[21]
Nevertheless, among the dead was the viceroy's own son, Lourenço, whose body was never recovered, despite the best efforts of Malik Ayyaz to retrieve it for the Portuguese viceroy.
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Upon hearing in Cochin of the death of his only son,Dom Francisco de Almeida was heart-stricken, and retired to his quarters for three days, unwilling to see anyone. The presence of a Mamluk fleet in India posed a grave threat to the Portuguese, but the viceroy now sought to personally exact revenge for the death of his son at the hands ofMirocem, supposedly having said that "he who ate the chick must also eat the rooster or pay for it".
Nevertheless, themonsoon was approaching, and with it the storms that inhibited all navigation in the Indian Ocean until September. Only then could the viceroy call back all available Portuguese ships for repairs in dry dock and assemble his forces in Cochin.[22]
Before they could depart though, on 6 December 1508Afonso de Albuquerque arrived inCannanore from thePersian Gulf with orders from the King of Portugal to replace Almeida as governor. Dom Francisco had a personal vendetta against Albuquerque, as the latter had been assigned to the Arabian Coast specifically to prevent Muslim navigation from entering or leaving the Red Sea. Yet his intentions of personally destroying the Muslim fleet in retaliation of his son's death became such a personal issue that he refused to allow his appointed successor take office. In doing so, the viceroy was in official rebellion against royal authority, and would rule Portuguese India for another year as such.[23]
On 9 December, the Portuguese fleet departed for Diu.[24]
From Cochin, the Portuguese first passed by Calicut, hoping to intercept the Zamorin's fleet, but it had already left for Diu. The armada then anchored inBaticala, to quell a dispute between its king and a local Hindu privateer allied to the Portuguese,Timoja. InHonavar, the Portuguese met with Timoja himself, who informed the viceroy of enemy movements. While there, the Portuguese galleys destroyed a fleet of raiders belonging to the Zamorin of Calicut.[24]
At Angediva, the fleet fetched fresh water and Dom Francisco met with an envoy of Malik Ayyaz, though the details of such rendezvous are unknown.[25] While there, the Portuguese were attacked by oar ships of the city ofDabul, unprovoked.
FromAngediva, the Portuguese set sail toDabul, an important fortified port city belonging to theSultanate of Bijapur. The captain of the galleySão Miguel, Paio de Sousa, decided to investigate the harbour and put to shore, but he was ambushed by a force of about 6,000 men and killed, along with other Portuguese. Two days later, the viceroy led his heavily armoured forces ashore and crushed the garrison stationed by the riverbank in an amphibious pincer attack. Dabul paid dearly for the act of provocation, as per the viceroy's orders the city was then razed, the surrounding riverside settlements devastated, and almost all their inhabitants killed, along with the cattle and even stray dogs in retaliation.
According toFernão Lopes de Castanheda, the sack of Dabul gave rise to a 'curse' on the western coast of India, where one might say:"may the wrath of the franks befall you".[26]
From Dabul, the Portuguese called at Chaul, where Dom Francisco ordered the governor of the town to prepare a tribute to be collected on the return from Diu. Moving towards Mahim, close to Bombay, the Portuguese found the town deserted.[27]
At Bombay, Dom Francisco received a letter from Malikk Ayyaz. Doubtlessly aware of the danger facing his city, he wrote to appease the viceroy, stating that he had the prisoners and how bravely his son had fought, adding a letter from the Portuguese prisoners stating that they were well treated.[28] The viceroy answered Malik Ayyaz (referred to as Meliqueaz in Portuguese) with a respectful but menacing letter, stating his intention of revenge, that they had better join all forces and prepare to fight or he would destroy Diu:
I the Viceroy say to you, honored Meliqueaz captain of Diu, that I go with my knights to this city of yours, to take the people who were welcomed there, who in Chaul fought my people and killed a man who was called my son, and I come with hope in God of Heaven to take revenge on them and on those who assist them, and if I don't find them I will take your city, to pay for everything, and you, for the help you have done at Chaul. This I tell you, so that you are well aware that I go, as I am now on thisisland of Bombay, as he will tell you the one who carries this letter.[29][30]
In the ten months between the Battle of Chaul and Diu, important developments took place on the Muslim field: Hussain took the chance tocareen his ships and recovered a straggled carrack with a reinforcement of 300 men. Notwithstanding, the relationship between Hussain and Ayyaz worsened, with Hussain now plainly aware of the duplicity of Ayyaz, who had taken custody of the Portuguese prisoners at Chaul – which Hussain apparently intended "to send back to Cairo stuffed". Unable to pay the remaining of his troops, Hussain was forced to pawn his own artillery pieces to Ayyaz himself. Presumably, only either the hope of fresh reinforcements or fear of the reaction of the Sultan now prevented him from returning to Egypt.[22]
At this point, should Malik Ayyaz assist Amir Hussain, he risked his city and his life; should he choose to turn on Hussain, the Sultan might take Ayyaz's head. If Hussain stood his ground, he risked annihilation and should he retreat, risked being executed by the Sultan of Egypt.
Now in a quadruple bind, they faced the Portuguese forces.
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On 2 February 1509, the Portuguese sighted Diu from atop the crow's nests. As they approached, Malik Ayyaz withdrew from the city, leaving overall command to Hussain. He ordered the oar ships to sally out and harass the Portuguese fleet before they had time to recover from the journey, but they did not pass beyond the range of the fortress's cannon. As night fell the Muslim fleet retreated into the channel, while the viceroy summoned all his captains to decide on the course of action.[27]
As day broke, the Portuguese could see that the Muslims had decided to take advantage of the harbour of Diu protected by its fort by lashing their carracks and galleys together close to shore and awaiting the Portuguese attack, thus relinquishing the initiative.[31] Portuguese forces were to be divided in four: one group to board the Mamluk carracks after a preliminary bombardment, another to attack the stationary Mamluk galleys from the flank, a 'bombardment group' that would support the rest of the fleet, and the flagship itself, which would not participate in the boarding, but would position itself in a convenient position to direct the battle and support it with its firepower. The brigantineSanto António would ensure communications.[32]
Santo António then ran through the fleet delivering the viceroy's speech, in which he detailed the reasons for which they sought the enemy, and the rewards to be granted in case of victory: the right to the sack,knighthood to all soldiers, nobility to the knights, criminals banished from the realm would be pardoned and slaves would receive the condition ofsquires if they were freed within a year.[33]
The wind turned, and by about 11:00 am, the royal banner was hoisted atop theFlor do Mar and a single shot fired, signaling the start of the battle.[33] At the general cry ofSantiago! the Portuguese began their approach, with the galleySão Miguel at the head of the formation, probing the channel. A general bombardment between the two forces preceded the grapple, and within the calm waters of the harbour of Diu, the Portuguese employed an innovative gunnery tactic: by firing directly at the water, the cannonballs bounced likeskipping stones. Abroadside from theSanto Espírito hit one of the enemy ships by the waterline, sinking it instantly.[34]
As the carracks made contact, Hussain'sflagship was grappled by theSanto Espírito. When theirforecastles crossed, a group of men led by Rui Pereira jumped onto the enemy forecastle, and before the ships were secured, the Portuguese had already stormed all the way to midship. Before the flagship was captured though, another Mamluk carrack came to its aid, boarding theSanto Espírito from the opposite side. Hussain had strengthened his forces with a great number of Gujarati soldiers, distributed across the ships, and the heavily armoured Portuguese infantry suddenly risked being overwhelmed. Rui Pereira was killed, but at this crucial moment, theRei Grande slammed against the free side of Hussain's flagship, delivering direly needed reinforcements, which tipped the scales in favour of the Portuguese.[35]
Up on thecrow's nests,Ethiopian and Turkish bowmen proved their worth against Portuguese matchlock crews. Many of the other Muslim mercenaries "fled at the first sight of the Portuguese".[36]
Hussain had expected the Portuguese to commit their entire forces to the grapple, so he kept the light oar ships back within the channel, to attack the Portuguese from behind when they engaged the carracks. Comprehending the stratagem, João da Nova maneuvered theFlor do Mar to block the channel entrance and prevent the oar ships from sallying out. The compact mass of oar ships provided an ideal target for Portuguese gunners, who disabled many ships that then blocked the path of the ones following. Unable to break through, the Zamorin's boats turned around after a short exchange, and retreated to Calicut. Throughout the course of the battle, theFlor do Mar fired over 600 shots.[37]
Meanwhile, the faster group of galleys and caravels grappled the flank of the stationary enemy galleys, whose guns were unable to respond. An initial Portuguese assault was repelled, but a Portuguese salvo set three of the galleys adrift.[35]
Slowly but surely, the Portuguese secured most of the carracks, half-blinded by the smoke. Hussain's flagship was overpowered and many crewmen began jumping ship. The galleys were defeated, and the shallow caravels positioned themselves between the ships and the coast, cutting down any who attempted to swim ashore.[38]
Eventually, only a single ship remained – a great carrack, larger than any other vessel in the battle, anchored too close to shore for most of the deep-draught Portuguese vessels to reach. Its reinforced hull was impervious to Portuguese cannon fire and it took a continuous bombardment from the whole fleet to finally sink it by dusk, thus marking the end of the Battle of Diu.[38]
The battle ended in victory for the Portuguese, with the Gujarat-Mamluk-Calicut coalition all but defeated. The Mamluks fought bravely to the very end, but were at a loss as to how to counter a naval force the like of which they had never seen before. The Portuguese had modern ships crewed by seasoned sailors, better equipped infantry – with heavyplate armour, arquebuses, and a type of clay grenade filled with gunpowder – more cannon and gunners more proficient in an art the Mamluks could not hope to match.
After the battle, Malik Ayyaz returned the prisoners ofChaul, well dressed and fed. Dom Francisco refused to take over Diu, claiming that it would be expensive to maintain, but signed a trade agreement with Ayyaz and opened afeitoria in the city.[39] The Portuguese would later seek ardently the construction of a fortress at Diu, but the Malik managed to postpone this for as long as he was governor.
The spoils of the battle included three galleys, three carracks, 600 bronze artillery pieces, and three royal flags of the Mamlûk Sultan of Cairo that were sent to Portugal to be displayed in theConvento de Cristo, inTomar, headquarters of theOrder of Christ, formerKnights Templar, of which Almeida was a member.[40] The Viceroy extracted from the merchants of Diu (who funded the refitting of the Muslim fleet) a payment of 300,000 goldxerafins, 100,000 of which were distributed among the troops and 10,000 donated to the hospital of Cochin.[41]
The treatment of the Mamluk captives by the Portuguese however, was brutal. The Viceroy ordered most of them to be hanged, burned alive, or torn to pieces, tied to the mouths of cannon, in retaliation for his son's death. Commenting in the aftermath of the battle, Almeida reported to King Manuel: "As long as you may be powerful at sea, you will hold India as yours; and if you do not possess this power, little will avail you a fortress on the shore."[42] After handing over the Viceroy's post toAfonso de Albuquerque and leaving forPortugal in November 1509, Almeida was himself killed in December ina skirmish against theKhoikhoi tribe near theCape of Good Hope, along with 70 other Portuguese – more than in the Battle of Diu. His body was buried on the beach.
Hussain survived the battle, and managed to flee Diu along with 22 other Mamluks on horseback. He returned to Cairo, and several years later was put in charge of another fleet with 3,000 men to be sent against the Portuguese, but he was murdered on the Red Sea, by his Turkish second-in-command – futureSelman Reis of the Ottoman navy. The Mamluk Sultanate of Egypt would collapse to anOttoman invasion shortly after.[40]
Of all the leading participants of the Battle of Diu, Malik Ayyaz would be the only one not to die a violent death; he died a wealthy man in his estate in 1522.[43]
The Battle of Diu is considered one of the most important battles in history. It marked the beginning of Western European dominance in the Indian Ocean. The author William Weir in his book50 Battles That Changed the World, ranks this battle as the 6th most important in history, losing only to theBattle of Marathon, theNika Rebellion, theBattle of Bunker Hill, theBattle of Arbela (Gaugamela) and theBattle of Hattin.[44] He says: "When the 15th century began, Islam seemed about ready to dominate the world. That prospect sank in the Indian Ocean off Diu."[45] The historian Rainer Daehnhardt says that this battle is compared only to theBattles of Lepanto andTrafalgar in terms of importance and legacy.[46] According to the scholarMichael Adas, this battle "established European Naval superiority in the Indian Ocean for centuries to come."[47]
