 The British victory in the 1760s at the Battle of Plassey finally sealed the fate of the French in India and launched Britain's dominance of the Indian subcontinent.The British took possession of Vellore Fort with relative ease and used the fort as a major garrison until Indian independence.In 1780, the fort was besieged by Hyder Ali during the Second Anglo-Mysore War, but the British garrison held out for over two years before the siege was lifted.