TheSoviet invasion of Ukraine was a major offensive by theUkrainian Front of theRed Army against theUkrainian People's Republic (UPR) during theSoviet–Ukrainian War. The invasion was first planned in November 1918, after theCouncil of People's Commissars of the Russian Soviet Federative Socialist Republic annulled theTreaty of Brest-Litovsk, and was launched in the first days of January 1919, with the occupation ofKharkiv. Its aim was to join Ukraine to theRSFSR, as the country was of significant economic, demographic and strategic importance for theBolsheviks. In the longer term, the capture of theBlack Sea coast was to prevent anintervention by theAllies in support of theVolunteer Army. Finally, the Bolsheviks intended to extend the area they control as far as possible to the west, in order to be able to support the otherrevolutionary movements in Europe.
In the first days of January 1919, by joining forces with local workers' units, the troops of the1st Ukrainian Soviet Division [uk] took Kharkiv, which was announced as the seat of theProvisional Workers' and Peasants' Government of Ukraine. Then they quickly captured most ofnorthern andeastern Ukraine, and on 5 February 1919, theyoccupied Kyiv. TheDirectorate of Ukraine moved toVinnytsia, then toKamianets-Podilskyi. By spring, the Red Army had reached theZbruch and repelled a counteroffensive by theUkrainian People's Army (UPA) that threatenedKyiv.
The introduction of the policy ofwar communism and therequisitioning of food for the needs of the cities quickly alienated a significant part of the Ukrainian peasantry from Bolshevik rule. The outbreak of a number of local uprisings, and in May 1919, therebellion of the 20,000-strong forces ofNykyfor Hryhoriv, prevented the Red Army from finally destroying the UPA and marching west towardsBessarabia andHungary. At the end of June, the Red Army suffereda series of defeats in clashes with the Volunteer Army inDonbas, losingKaterynoslav andPoltava by the end of June 1919, as well as those territories captured in the course of operations againstMykolaiv andOdesa. In August, the Red Army also succumbed to the offensive of the combined forces of the Ukrainian People's Army and theUkrainian Galician Army. On 31 August,Kyiv was captured, first by the Ukrainian People's Army, and then, after their withdrawal from the city, by the Volunteer Army.[1]
On 12 November 1918, at the direct command of theCouncil of People's Commissars, theRevolutionary Military Council of theRussian SFSR, headed byLeon Trotsky, dismissedVladimir Antonov-Ovseenko from the Ural Front and ordered him to prepare an offensive in the direction of Ukraine within ten days. The Ukrainian Revolutionary Military Council was immediately established, including Antonov-Ovseenko,Joseph Stalin,Volodymyr Zatonsky andGeorgy Pyatakov.[2] Over the next two days, Antonov-Ovseenko developed an offensive plan. It was based on the assumption that, in the first place, the Bolshevik forces should seize cities, industrial centers, ports, and railway junctions, which would provide the necessary resources and guarantee the possibility of gaining support from the workers. In the first move, Antonov-Ovseenko planned to attackKharkiv, which would then become the base for the march toDonbas. The second step was to captureKyiv, and the third step was to capturesouthern Ukraine and theBlack Sea coast, including the key centers ofMykolaiv andOdesa.[3]
As the commander-in-chief of the Red ArmyJukums Vācietis adopted the Antonov-Ovseenko plan without amendments, he decided that he would receive in the course of operations all the necessary replenishment (includingarmored trains) and supplies.[3] In particular, the commander of theUkrainian Front expected that he would have at his disposal theReserve Army under the command ofVasily Glagolev.[3] Vacietis, however, assigned him completely different tasks - participation in thedefense of Voronezh againstPyotr Krasnov'sDon Army andAnton Denikin'sVolunteer Army.[4] This was in line withVladimir Lenin's expectations - while Trotsky was convinced that the seizure of Ukraine should be a priority for the Red Army, the chairman of the Council of People's Commissars considered it more important to repel direct threats by theWhite movement to theSouthern andEastern Fronts.[4] An additional source of conflicts between Vacietis and the Ukrainian Revolutionary-Military Council was the conviction of Stalin, Zatonsky and Pyatakov that they were performing a task of special importance, independent of other operations conducted by the Southern Front.[5]
At the disposal of Antonov-Ovseenko were initially1st [ru] and2nd Ukrainian Soviet Divisions [ru], as well as the 9th division, to which new volunteers were constantly arriving, but which needed urgent additions to hardware and supplies.[5] The two Soviet Ukrainian divisions, formed in mid-1918 by the Ukrainian Bolsheviks in order to fight the government ofPavlo Skoropadskyi and theCentral Powers, did not have high combat value. Many volunteers who joined them during the formation intended to fight only in their local area and deserted when the fighting moved to other regions.[6]
On 20 November, Antonov-Ovseenko directed orders both to the line units of the Red Army and to irregular units in Ukraine that were participating in the anti-Hetman uprising and recognizing, at least formally, the sovereignty of theAll-Ukrainian Central Military-Revolutionary Committee [uk].[7] He ordered the revolutionary troops inHomiel to maintain control of the city in order to prevent anti-Bolshevik forces from moving from Kyiv towardsKursk andBryansk. Those operating in the regions ofKaterynoslav andKharkiv were ordered to initiate local revolts, take control of smaller towns in order to facilitate the Red Army's march south, help in the capture of Kharkiv and, in the longer term,Mykolaiv. Bolshevik supporters in northern Donbas were called on to organize guerrillas and take control of the region, and those who were inCrimea - to prepare to repel possibleAllied intervention on the peninsula.[7] In November 1918, a wave of strikes broke out in cities ineastern Ukraine and partisan troops also operated outside the cities.[8] Meanwhile, on 21 November, Vacietis ordered Antonov-Ovseenko to focus on the expansion and training of troops and to set up a strike group that would attack the forces of Pyotr Krasnov atMillerovo.[9] Troops of the Don Cossacks, with the consent of the retreating Germans, took control of the Donbas from them.[8]
The commander of the Ukrainian Front decided to ignore the orders of the high command, offended by the tone and wording contained in the Vacietis directives. Having learned about the landing of the first Allied ships in Odesa, Antonov-Ovseenko decided to lead the offensive according to his own concept.[10] At the same time, Pyatakov and Zatonsky began to form a Bolshevik government for Ukraine.[11] Although in October 1918, the Bolshevik government had concluded an agreement with the Ukrainian socialist leaderVolodymyr Vynnychenko, under which it was not to interfere in the internal affairs of the Ukrainian People's Republic, in exchange for consent to the legal operation of the communist party within its borders.[12] However, it was decided to undertake military intervention.[13] On 28 November 1918, theProvisional Workers' and Peasants' Government of Ukraine was established in Kursk.[14]

In December 1918, the Ukrainian Soviet divisions were put at the disposal of Antonov-Ovseenko. Numbering approximately 5,000 soldiers each, the divisions were still not full-fledged regular formations. They consisted of undisciplined, largely independent departments. Their commanders included both ideological communists and ordinary peasants.[15] One-third of the red soldiers and guerrillas had no weapons at all.[15] Before the start of military operations, Antonov-Ovseenko relieved the most disgraced commanders from command, but he never gained complete control over the units that made up his front.[15]
Further disputes between Antonov-Ovseenko and Vacietis concerning competences and tactics lasted almost throughout December 1918.[16] Finally, on 2 January 1919, Antonov-Ovseenko made a decision on his own to start the march toKharkiv, having learned that the last German units were withdrawing from the city and that the Bolshevik workers' units were getting ready to start an armed uprising.[17] On 3 January 1919, the 1st Ukrainian Soviet Division entered Kharkiv.[13] The next day, theUkrainian Front was formally established with Antonov-Ovseenko as the commander.[13] The Reserve Army was attached to the Front, andVasily Glagolev was appointed as its chief of staff.[17] A significant part of the partisan peasant units in Ukraine, which had previously fought against the Germans and sympathized with Petliura, defected to the Soviet side, under the influence of Bolshevik agitation.[18] The urban proletariat of non-Ukrainian origin also joined the fight on the side of the Red Army.[19]
After the capture of Kharkiv, the offensive of the Ukrainian Front significantly accelerated. On 12 January 1919, the Red Army capturedChernihiv and, on 20 January, it successfully capturedPoltava after a sixteen-day battle for the city.[20] Units of the 2nd Ukrainian Soviet Division, led byPavel Dybenko, enteredKaterynoslav, which the Petliurists andMakhnovists had been fighting fierecly over.[21] On 18 January 1919, Antonov-Ovseenko, who moved his quarters from Kursk to Chernihiv, accelerated the preparations for the march to Kyiv. He expected that the Allies who landed in Odesa and Crimea also intended to launch an offensive in the same direction, in support ofAnton Denikin'sVolunteer Army.[22] However, the negotiations of the Directorate with the French regarding active military aid ended with the French refusing.[23]

In the face of the invasion, treating the Red Army's march as an expression ofRussian imperialism, Vynnychenko's Ukrainian socialists supported the defense of the country's independence.[24] However, it turned out to be impossible to successfully repel the march of the Ukrainian Front, as the forces loyal to the Directorate were dwindling with each passing day.[25] The Ukrainian national movement did not have a broad social base, being the domain of mainly a narrow intelligentsia. In addition, the Directorate was weakened by internal disputes between nationalists and socialists.[19] At the end of January, only 21,000 soldiers remained loyal to the Ukrainian government. On 23 January, Symon Petliura began the evacuation of military personnel from the capital to avoid a battle, the outcome of which would be a foregone conclusion.[26]

Meanwhile, the Bolshevik troops continued to grow, after the occupation of Kharkiv, as the 1st Ukrainian Soviet Division alone reached over 10,000 soldiers.[27] The Ukrainian capital was left without a fight,[27]seized by the 1st Ukrainian Soviet Division on 5 February.[13] Earlier, on 29 January 1919, the Provisional Workers' and Peasants Government was transformed into theCouncil of People's Commissars, headed byChristian Rakovsky.[28] The directorate moved toVinnytsia,[29] and then toKamianets-Podilskyi.[13]
By the end of January, the Red Army had captured the entirety ofleft-bank Ukraine.[30] In early February, partisan units allied with the Red Army seizedZnamianka,Kryvyi Rih andDovhyntseve [uk]. A workers' uprising broke out inYelysavethrad, the participants of which, after joining forces with the partisans, seized the city. On 12 February,Novomyrhorod was seized.[31] The Red Army continued theirmarch south and west into areas controlled by Allied interventionist troops.[32] By this time, there were 200,000 people in the Red Army, as theanarchist forces ofNestor Makhno were incorporated into the Ukrainian Soviet ranks[33] and the peasant division of otamanNykyfor Hryhoriv also defected from the side of the Ukrainian nationalists to the Soviets.[34]
After the capture of Kyiv, the Red Army continued its offensive actions in three directions. The Northern Group headed fromMazyr towardsKorosten, and fromLuninets throughSarny towardsRivne, to prevent the Ukrainian People's Army from joining forces with theUkrainian Galician Army.[30] The Southern Group, supported by the forces of otaman Hryhoriv, was intended to cut off the UPA troops from possible Allied aid and attacked from the Katerynoslav region andKremenchuk along the lineZhmerynka-Koziatyn-Podilsk.[30] The third group headed from Kyiv along theBerdychiv-Koziatyn-Zhmerynka line to prevent the northern and southern wings of the Ukrainian People's Republic from joining.[30] Ukrainian troops survived inVolhynia andPodolia, but the existence of the Ukrainian People's Republic, at the same time at war with Poland, and cut off from the Black Sea from the south by French forces, seemed doomed.[35] By mid-February, there were 46,000 soldiers and 14 thousand partisans under the command of Antonov-Ovseenko. The regular army, however, still remained insufficiently disciplined and trained, lacked competentofficers andpolitical commissars. In turn, the loyalty of partisan formations to the Bolshevik command was uncertain, these units repeatedly robbed and murdered Jews, or even local newly arrived Soviet officials.[36] In the spring of 1919, the army of the Ukrainian People's Republic withdrew to the vicinity of Kamianets-Podilskyi and western Volhynia,[37] and the Red Army had reached theZbruch.[29]
The implementation ofwar communism by the government of Rakovsky, which introducedrequisitions and theCheka to the countryside, quickly alienated a significant part of the Ukrainian peasantry from the Bolshevik rule. Rakovsky was also reluctant to cooperate with theBorotbists, who acted independently of the Bolshevik party. As a result, there was a series of peasant uprisings in the countryside against the new authorities.[38] The reorganization of the Ukrainian Soviet government and the introduction of Borotbist representatives into it only partially calmed the situation.[39] Party officials and activists from Moscow, not understanding the local realities, contributed to the growth of antagonisms.[40]
In March 1919, the Ukrainian People's Army launched a counteroffensive, defeating the Red Army along the Koziatyn-Berdychiv line. It came close to achieving its goal of regaining Kyiv.[30] In April, the Red Army launched a counter-attack, seizing Zhmerynka and cutting off the southern flank of the Ukrainian People's Army from its core body. The Ukrainian People's Army was pushed to a narrow strip of territory, with an average width of 40-50 km, in theBrody andDubno region. An attempted coup byVolodymyr Oskilko weakened it all the more.[30]

In May 1919, the most serious uprising against the Soviet government incentral andsouthern Ukraine took place - otaman Nykyfor Hryhoriv led arebellion against the command of the Ukrainian Front and the government of the Ukrainian SSR. His forces numbered 20,000 soldiers, 10 armored trains and 700 machine guns, which allowed him to take control of the area withKaterynoslav,Yelysavethrad,Kherson,Kremenchuk,Mykolaiv,Cherkasy,Oleksandriia andKryvyi Rih.[41]
The necessity to fight Hryhoriv forced the command of the Ukrainian Front to give up any further offensive in the south-west direction, making it impossible to enterBessarabia andEastern Galicia and preventing them from providing military support to theHungarian Soviet Republic.[38]
In June 1919, after the conclusion of a ceasefire withPoland and regrouping, the Ukrainian People's Army numbered 15,000 active soldiers. It launched a new counter-offensive. At the beginning of the month, it again took control ofPodolia. At the end of the month, the Red Army achieved a new victory, takingProskuriv and approachingKamianets-Podilskyi.[30] The Ukrainian People's Army achieved a new success when it was joined byYuriy Tyutyunnyk's troops, which had previously been under the command of Hryhoriv. The Ukrainian counter-offensive reached the line Horodok-Jarmolińce-Szarhorod-Dunajowce-Nowa Uszyca-Wapniarka. This was followed by the merger of the Ukrainian People's Army with the Ukrainian Galician Army, which brought together 85,000 soldiers and 15,000 partisans.[30] At the same time, the Red Army suffered a series of defeats in the fight against the Volunteer Army. At the beginning of June, it lost in thebattle for the Donbas. By 27 June, the Ukrainian Soviet capital ofKharkiv waslost to the Whites.[42] The following day, Katerynoslav also fell to the White advance, followed soon after byPoltava,Mykolaiv andOdesa.[43]
In August 1919, the Ukrainian troops carried out asuccessful offensive [pl] in the direction of Kyiv, successively takingVinnytsia on 12 August,Starokostiantyniv on 14 August,Berdychiv on 19 August andZhytomyr on 21 August.[30] On 31 August, the Ukrainian Galician troops ofMyron Tarnavsky briefly entered Kyiv, which had been abandoned by the Bolsheviks, but a few hours later White troops led byNikolai Bredov [ru] occupied the city.[1] As the bridges on theDniepr were not manned by the Ukrainian troops, they were forced tohand the city over to the Whites.[1] The conflict between the Ukrainian nationalists and the Whites made it possible for the Bolsheviks to transfer some of their forces from the Katerynoslav region toright-bank Ukraine, near Zhytomyr, and to continue fighting with Petliura's forces.[30]