Tipu Sultan died fighting the English forces under—

Tipu Sultan, the ruler of Mysore, died on May 4, 1799, during the Fourth Anglo-Mysore War while defending his capital, Srirangapatna [c3][t2]. The war was initiated by Lord Wellesley (then known as Lord Mornington), who became Governor-General in 1798 [c1][t4]. Wellesley was an imperialist who aimed to eliminate Tipu's independent existence due to the Sultan's growing friendship with the French and his refusal to accept the Subsidiary Alliance [c1][c4]. Under Wellesley's leadership, the British forces, supported by the Nizam of Hyderabad and the Marathas, besieged Srirangapatna [t3][t7]. Tipu Sultan was killed at the gates of his capital during the final assault led by General David Baird [c2][t3]. While Lord Cornwallis had defeated Tipu in the Third Anglo-Mysore War (1790–92), it was under Lord Wellesley's administration that Tipu was finally killed in 1799 [t1][t4].

Sources

1. [1] Rajiv Ahir. A Brief History of Modern India (2019 ed.). SPECTRUM. > Chapter 5: Expansion and Consolidation of British Power in India > Background > p. 98
2. [2] History , class XI (Tamilnadu state board 2024 ed.) > Chapter 18: Early Resistance to British Rule > Fourth Mysore War (1799) > p. 282
3. [3] Modern India ,Bipin Chandra, History class XII (NCERT 1982 ed.)[Old NCERT] > Chapter 2: Indian States and Society in the 18th Century > Mysore > p. 23
4. [4] Modern India ,Bipin Chandra, History class XII (NCERT 1982 ed.)[Old NCERT] > Chapter 4: The British Conquest of India > Expansion under Lord Wellesley (1798-1805) > p. 78
5. [5] https://www.nam.ac.uk/explore/tipu-sultans-war-turban
6. [6] https://www.britannica.com/event/Mysore-Wars