Now fighting alone in the east, the Austrians were soundly defeated in the Battle of Burkersdorf (July 1762). The French, had suffered severe reverses as well. In America, they had lost Louisbourg (1758), Quebec (1759), and some possessions in the West Indies. In India, the British victories at Plassey (1757) and Pondichéry (1761) had destroyed French power. On the sea, the French took Port Mahón from the British (1757) but were defeated by Hawke in Quiberon Bay (1759). The entry of Spain into the war under the terms of the Family Compact of 1761 was of little help to France, where the war had never been popular.