Chortkiv offensive
The Chortkiv offensive also known as the June offensive, was one of the most successful counteroffensive military operations of the Ukrainian Galician Army against the Polish Army during the Polish-Ukrainian War in 1918–1919. Around 19,000–20,000 Ukrainians pushed back the Poles along the entire front of the 39,000-strong Polish Army, reinforced by the French Third Republic.
Goals
The Ukrainian goal of the offensive was to push the Polish Army back to the Zolota Lypa River to improve the morale of the local Ukrainians and the UHA, as well as to provide a defensible area from which to mobilize a larger force and push the Poles back past Lviv, Przemyśl, Chełm, Lublin and other territories claimed by the West Ukrainian People's Republic after 1 November 1918.Ukrainian offensive
On 8 June 1919, the Ukrainian Galician Army, numbering around 19,000–20,000 men, assaulted Chortkiv, forcing the Poles to retreat to the Holohory–Peremyshliany–Bukachivtsi line. Under the command of general Oleksandr Hrekov, the Ukrainian forces reached Lviv, the main urban center of Eastern Galicia and proclaimed capital of the West Ukrainian People's Republic, although they were unable to capture it.The Ukrainian forces also gained victories at Yahilnytsia, Vyhnanka, Bilobozhnytsia, Kopychyntsi, Yazlovets, Buchach, Terebovlya, Monastyryska, Ternopil, Kozova, Nyzhniv, Pidhaytsi, Berezhany. However, despite the town of Berezhany falling into Ukrainian hands, the Polish forces were able to mount an orderly retreat and prevent the Ukrainian forces from developing the offensive further, denying them ammunition stockpiles and slowing the momentum of the offensive considerably. On June 23rd, the Polish forces successfully attacked Holohory, pushing the Ukrainians back beyond the Zolota Lypa river.