With the growing possibility of an Allied invasion in the Balkans, the Axis began to divert more resources to the destruction of the Partisans main force and its high command. This meant, among other things, a concerted German effort to capture Josip Broz Tito personally. On 25 May 1944, he managed to evade the Germans after the Raid on Drvar (Operation Rösselsprung), an airborne assault outside his Drvar headquarters in Bosnia.