In 1769 Hyderabad city became the formal capital of the Nizams. In response to regular threats from Hyder Ali (Dalwai of Mysore), Baji Rao I (Peshwa of the Maratha Empire), and Basalath Jung (Asif Jah II's elder brother, who was supported by the Marquis de Bussy-Castelnau), the Nizam signed a subsidiary alliance with the East India Company in 1798, allowing the <answer>British Indian Army</answer> to occupy Bolarum (modern Secunderabad) to protect the state's borders, for which the Nizams paid an annual maintenance to the British.
Which military occupied Hyderabad city in a protection role?
British Indian Army