Lopatyn on 14 Aug. On 15 Aug., his 6th Cavalry Division swam the river and came within nine miles of Lwow, despite being counter-attacked by the Poles, which included twenty planes. However, on 16 Aug., he received orders from Tukhachevsky ordering Budyonny to march to Ustilug-Wlodzimierz. Budyonny continued to advance so that Lwow was surrounded on three sides. Yet on the evening of 19 Aug., Budyonny received news of the Polish counter-offensive, and abandoned the siege of Lwow on 20 Aug. Related battles Several battles near Lwów were decisive for the outcome of the entire war. They included: The Battle of Zadwórze on 17 August ended in the near total destruction of Polish forces, but at the same time halted the Soviet advance preventing the forces of Siemion Budionnyi from either advancing towards unprepared Lwów or breaking off and helping the Soviet forces fighting in the Battle of Warsaw. The Battle of Komarów on 31 August 1920, the world's largest cavalry battle, since 1813 and the last great battle in which cavalry was used as such and not as mounted infantry. The Battle of Komarów was a complete disaster for the Russian 1st Cavalry Army which sustained heavy casualties and barely avoided being totally surrounded. After that battle, the 1st Cavalry Army morale had collapsed and the army which was one of the most feared of the Soviet troops was no longer considered an effective fighting force. References See also Battle of Lemberg (1918) Battle of Lwów (1939) Lwów Eagles Polish-Ukrainian War Conflicts in 1920 1920 in Poland Lwow 1920 History of Lviv 1920 in Ukraine July 1920 events August 1920 events September 1920 events