The British meanwhile were becoming more powerful under their new viceroy Lord Wellesley, and his brother Arthur, who would go on to become the celebrated Duke of Wellington. The duo had defeated Tipu Sultan of Mysore in 1799, and were now taking on the Marathas. In the Battle of Assaye in 1803, the Begum, as part of her Mughal allegiance, had to send five battalions on the Maratha side. In this hard-fought battle, which Wellington rated his finest victory (more than Waterloo over Napoleon), the Begum’s troops, under her covert instructions, managed to preserve themselves, and return to her safe and sound. Meanwhile, the Marathas had lost the battle of Delhi to the British under Lord Lake, and British troops entered Delhi.