Kusmanek, the Przemyśl commander, estimated he had enough supplies to last until March. This prompted Conrad to try and advance past the Russian lines along the Carpathians once again, ordering Eduard von Böhm-Ermolli's Second Army to reach Przemyśl by 12 March. Kolomea was captured by Pflanzer-Baltin on 16 February, and Stanislau on 20 February. However, the Russians transferred their Ninth Army to that sector, and by early March, "Stavka" placed increased emphasis on a southern campaign. An invasion of Hungary would be an attempt to knock the Austro-Hungarian Empire out of the war, and according to Buttar, "In addition to weakening Germany by eliminating its main ally, this would induce Romania and Italy to enter the war against the Central Powers." Heavy snow in mid-March, and Russian counterattacks meant little real change in battlefield positions, until 20 March when the Russian offensive commenced. On 22 March, Przemyśl surrendered. With Conrad's front line in danger of retreat, Georg von der Marwitz's "Beskidenkorps" counterattacked, forcing the Russians to be driven back and their Eighth and Ninth Armies put on the defensive.