Zbruch River
In the south, Petliura's Ukrainian forces defeated the Bolshevik 14th Army and took control of the left bank of the Zbruch River on 18 September. In October, they moved east to the Yaruha–Sharhorod–Bar–Lityn line. They now numbered 23,000 soldiers and controlled territories immediately to the east of Polish-controlled areas. They had planned an offensive in Ukraine for 11 November but were attacked by the Bolsheviks on 10 November. By 21 November, after several battles, they were driven into Polish-controlled territory.