[3] In order to gain better positions before the general offensive planned for May, the Polish Army launched an operation code-named 'Jazda' on 19 April.

[5] At the end of April 1919, the Supreme Command of the Polish Armed Forces drew up a plan for an offensive against the West Ukrainian army in Eastern Galicia.

Their core consisted of:[7] The total combat strength of the Polish troops scheduled for the operation was about 50,000 soldiers, 200 cannons and 900 machine guns.

I trust that you will continue to exert all your strength and will bring about the final complete victory for the glory of the Republic of Poland.On the 25th of May, Polish forces reached the Bolechów - Chodorów - Bóbrka - Busk line.

[16] At the same time, the Romanian army, together with the 4th Polish Rifle Division, began to occupy the south-western areas of ZURL (Pokucia).

Poland, in turn, was able to reach the borders with Romania , while cutting off the WUNR from Czechoslovakia - the only (not counting the UPR) trading partner of the West Ukrainian People's Republic.