This document discusses several Bengal Native Infantry regiments that rebelled against the British during the 1857 Indian Rebellion. It mentions that the 1st Bengal Native Infantry was disbanded in 1842 for refusing orders, and notes several other Bengal regiments that rebelled in 1857 at locations like Meerut, Delhi, Cawnpore, Ambala, Faizabad, and Mhow, helping trigger the large-scale rebellion against British rule.