To assist the Tyrolean Rebellion, the Austrian high command sent a regular division into the Tyrol under the leadership of Feldmarschallleutnant Johann Gabriel Chasteler de Courcelles. The VII Corps, consisting of three Bavarian divisions under the overall command of Marshal François Joseph Lefebvre, invaded the Tyrol in mid-May. On 11 May, Lieutenant General Bernhard Erasmus von Deroy relieved the besieged Kufstein Fortress. Lieutenant General Karl Philipp von Wrede crushed Chasteler's division on 13 May at the Battle of Wörgl. Soon afterward, Lefebvre occupied Innsbruck. However, Deroy's division was attacked on 25 May and 29 May in the first two Battles of Bergisel and compelled to evacuate the Tyrol. By this time Chasteler's surviving regular troops were recalled to join the Army of Inner Austria, which was retreating toward Hungary. Only a handful of regulars were left to operate in the Tyrol.