Kharkiv offensive

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 to Kharkiv, 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, the Ukrainian Front was formally established with Antonov-Ovseenko as the commander.^[13] The Reserve Army was attached to the Front, and Vasily 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]

March on Poltava, Katerynoslav and Kyiv

After the capture of Kharkiv, the offensive of the Ukrainian Front significantly accelerated. On 12 January 1919, the Red Army captured Chernihiv and, on 20 January, it successfully captured Poltava after a sixteen-day battle for the city.^[20] Units of the 2nd Ukrainian Soviet Division, led by Pavel Dybenko, entered Katerynoslav, which the Petliurists and Makhnovists 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 of Anton Denikin's Volunteer 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 of Russian 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 the Council of People's Commissars, headed by Christian Rakovsky.^[28] The directorate moved to Vinnytsia,^[29] and then to Kamianets-Podilskyi.^[13]

By the end of January, the Red Army had captured the entirety of left-bank Ukraine.^[30] In early February, partisan units allied with the Red Army seized Znamianka, Kryvyi Rih and Dovhyntseve [uk]. A workers' uprising broke out in Yelysavethrad, the participants of which, after joining forces with the partisans, seized the city. On 12 February, Novomyrhorod was seized.^[31] The Red Army continued their march south and west into areas controlled by Allied interventionist troops.^[32] By this time, there were 200,000 people in the Red Army, as the anarchist forces of Nestor Makhno were incorporated into the Ukrainian Soviet ranks^[33] and the peasant division of otaman Nykyfor 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 from Mazyr towards Korosten, and from Luninets through Sarny towards Rivne, to prevent the Ukrainian People's Army from joining forces with the Ukrainian 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 and Kremenchuk along the line Zhmerynka-Koziatyn-Podilsk.^[30] The third group headed from Kyiv along the Berdychiv-Koziatyn-Zhmerynka line to prevent the northern and southern wings of the Ukrainian People's Republic from joining.^[30] Ukrainian troops survived in Volhynia and Podolia, 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 competent officers and political 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 the Zbruch.^[29]

The implementation of war communism by the government of Rakovsky, which introduced requisitions and the Cheka to the countryside, quickly alienated a significant part of the Ukrainian peasantry from the Bolshevik rule. Rakovsky was also reluctant to cooperate with the Borotbists, 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]

Ukrainian counter-offensive

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 the Brody and Dubno region. An attempted coup by Volodymyr Oskilko weakened it all the more.^[30]

In May 1919, the most serious uprising against the Soviet government in central and southern Ukraine took place - otaman Nykyfor Hryhoriv led a rebellion 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 with Katerynoslav, Yelysavethrad, Kherson, Kremenchuk, Mykolaiv, Cherkasy, Oleksandriia and Kryvyi 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 enter Bessarabia and Eastern Galicia and preventing them from providing military support to the Hungarian Soviet Republic.^[38]

In June 1919, after the conclusion of a ceasefire with Poland 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 of Podolia. At the end of the month, the Red Army achieved a new victory, taking Proskuriv and approaching Kamianets-Podilskyi.^[30] The Ukrainian People's Army achieved a new success when it was joined by Yuriy 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 the battle for the Donbas. By 27 June, the Ukrainian Soviet capital of Kharkiv was lost to the Whites.^[42] The following day, Katerynoslav also fell to the White advance, followed soon after by Poltava, Mykolaiv and Odesa.^[43]

In August 1919, the Ukrainian troops carried out a successful offensive [pl] in the direction of Kyiv, successively taking Vinnytsia on 12 August, Starokostiantyniv on 14 August, Berdychiv on 19 August and Zhytomyr on 21 August.^[30] On 31 August, the Ukrainian Galician troops of Myron Tarnavsky briefly entered Kyiv, which had been abandoned by the Bolsheviks, but a few hours later White troops led by Nikolai Bredov [ru] occupied the city.^[1] As the bridges on the Dniepr were not manned by the Ukrainian troops, they were forced to hand 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 to right-bank Ukraine, near Zhytomyr, and to continue fighting with Petliura's forces.^[30]