 Austrian and Russian troops even occupied Berlin for several days in August 1760.However, these victories did not enable the Habsburgs to win the war, as the French and Habsburg armies were destroyed by Frederick at Rossbach in 1757.After the defeat in Torgau on 3 November 1760, Maria Theresa realised that she could no longer reclaim Silesia without Russian support, which vanished after the death of Tsaritsa Elizabeth in early 1762.