The Siege of Adoni occurred between the forces of Tipu Sultan of the Kingdom of Mysore and the Maratha Empire allied with the Nizam of Hyderabad. Tipu Sultan surprised Haripant when he decided to advance for Adoni. A group of Maratha and Nizam forces moved towards Adoni to provide relief. On May 20th, Tipu Sultan had annihilated the peth of Adoni and had devastated and inflicted immense losses on Adoni's cavalry. On June 29th, Tipu took the fort by surprise and "without firing a shot."