Tensions are already inflamed due to British…
1780 CE
Ali invades the Carnatic in July 1780, A, and lays siege to Tellicherry and Arcot.
A seven thousand-strong Company relief force under William Baille is intercepted and destroyed by the Tipu Sultan on September 10; thus far the worst defeat suffered by a European army in India.
Instead of pressing on for a decisive victory against a second Company army at Madras, Ali renews the siege at Arcot, capturing it on November 3.
The delay allows British forces to regroup for campaigning the following year.