In March 1919, Polish units opened an offensive: forces under General Stanisław Szeptycki captured the city of Slonim (2 March) and crossed the Neman, whilst Lithuanian advances forced the Soviets out of Panevėžys. A final Soviet counter-offensive retook Panevėžys and Grodno in early April, but the Western Army was too thinly spread to fight both the Polish and Lithuanian troops, and the German units assisting them. The Polish offensive quickly gained momentum, and Vilna offensive in April 1919, forced Litbel to evacuate the capital first to Dvinsk (28 April), then to Minsk (28 April), then to Bobruysk (19 May). As the Litbel lost territory, its powers were quickly stripped by Moscow. For example, on 1 June Vtsik's decree put all of Litbel's armed forces under the command of the Red Army. On 17 July, the Defence Soviet was liquidated, and its function was passed to Minsk's Milrevcom. When on 8 August Polish forces captured Minsk, that same day the capital was evacuated to Smolensk. On 28 August Lithuanian forces took Zarasai (the last Lithuanian town held by Litbel) and the same day Bobruysk fell to the Poles.