Multiple choice When did the soldiers of Bairakpur cantt refused to use the fat cartridges? December 1857 June 1857 March 1857 September 1857 Reveal answer Fill a bubble to check yourself C Correct answer Explanation In March 1857, Mangal Pandey and other soldiers at Barrackpore refused to use the greased cartridges rumored to contain cow and pig fat. This marked the beginning of the 1857 Revolt and preceded the actual outbreak in Meerut in May 1857.