The largest and best-known of the Operation Tempest battles, the Warsaw Uprising, constituted an attempt to liberate Poland's capital, and began on 1 August 1944. Polish forces took control of substantial parts of the city and resisted the German-led forces until 2 October (a total of 63 days). With the Poles receiving no aid from the approaching Red Army, the Germans eventually defeated the insurrectionists and burned the city, quelling the Uprising on 2 October 1944. Other major Home Army city risings included Operation Ostra Brama in Wilno and the Lwów Uprising. The Home Army also prepared for a rising in Kraków, but aborted due to various circumstances. While the Home Army managed to liberate a number of places from German control—for example the Lublin area, where regional structures were able to set up a functioning government—they ultimately failed to secure sufficient territory to enable the government-in-exile to return to Poland due to Soviet hostility.