Despite numerical superiority Haider Ali suffered defeats at the battles of Chengham and Tiruvannamalai .
In a bid to stem Haidar 's rise , the British formed an alliance with the Marathas and the Nizam of Golconda , culminating in the First Anglo - Mysore War in 1767 .
Despite numerical superiority Haidar   suffered defeats at the battles of Chengham and Tiruvannamalai .
In a bid to stem Haidar 's rise , the British formed an alliance with the Marathas and the Nizam of Golconda , culminating in the First Anglo - Mysore War in 1767 .