Causes for the outbreak of Vellore Revolt in 1806: 

1. The Sepoys in the British Indian Army had a strong sense of resentment over low salary and poor prospects of promotion. 

2. The English officers disrespect for the social and religious sentiments of the Indian sepoys also angered them.

3. Many sepoys families were in dire economic straits due to out break of famine in 1805 and the unsettled conditions caused by new land tenures. 

4. The imprisonment of Tipu’s sons and the family members in Vellore Fort.

The immediate cause for the revolt was triggered by the new military regulations introduced by the Commander in Chief Sir John Cradock.

1. The Indian soldiers were not allowed to wear caste marks or ear rings when in uniform. 

2. They were asked to shave their beard and trim the moustache to look smart. 

3. The most resented cause was the leather cockade made of animal skin. 

4. The sepoys were compelled to wear the turban and those who refused were severely punished. 

5. In 10 July 1806 in the early hours guns were booming and the Indian sepoys of the regiments 1 and 23 raised their standard of revolt.