Explanation:

Vellore Mutiny
The Vellore mutiny on 10 July 1806 was the first instance of a large-scale and violent mutiny by Indian sepoys against the East India Company, predating the Indian Rebellion of 1857 by half a century. The revolt, which took place in the South Indian city of Vellore, was brief, lasting only one full day, but brutal as mutineers seized the Vellore Fort and killed or wounded 200 British troops. The mutiny was subdued by cavalry and artillery from Arcot. Summary executions of about 100 mutineers took place during the suppression of the outbreak, followed by the formal court-martial of smaller numbers.
The immediate causes of the mutiny revolved mainly around resentment felt towards changes in the sepoy dress code, introduced in November 1805. Hindus were prohibited
from wearing religious marks on their foreheads and Muslims were required to shave their beards and trim their moustaches. These changes, intended to improve the "soldierly appearance" of the men, created strong resentment among the Indian soldiers.
In addition to the military grievances listed above, the rebellion was also instigated by the sons of the defeated Tipu Sultan, confined at Vellore since 1799. Tipu's wives and sons, together with numerous retainers, were pensioners of the East India Company and lived in a palace within the large complex comprising the Vellore Fort. One of Tipu Sultan's daughters was to be married on 9 July 1806, and the plotters of the uprising gathered at the fort under the pretext of attending the wedding. The objectives of the civilian conspirators remain obscure but by seizing and holding the fort they may have hoped to encourage a general rising through the territory of the former Mysore Sultanate. However, Tippu's sons were reluctant to take charge after the mutiny arose.