The 18th Regiment of the Bengal Native Infantry was a unit of the Bengal Native Infantry that was formed in 1776, then mutinied in 1857 and was disbanded.
Chronology
1776 raised for the Vizier of Oude
1777 incorporated in HEIC service as the 23rd Battalion of Bengal Native Infantry 1781 became the 16th Regiment of Bengal Native Infantry 1784 became the 16th Regiment of Bengal Native Infantry 1786 became the 20th Battalion of Bengal Native Infantry 1796 became the 2nd Battalion 6th Regiment of Bengal Native Infantry 1824 became the 18th Regiment of Bengal Native Infantry 1857 mutinied at Bareilly 31 May
In 1861, after the mutiny, the title was given to the Alipore Regiment which later became the 18th Infantry.