The 19th B.N.I. is important because it was the regiment charged with testing the new cartridges on 26 February 1857. However, right up to the mutiny the new rifles had not been issued to them, and the cartridges in the magazine of the regiment were as free of grease as they had been through the preceding half-century. The paper used in wrapping the cartridges was of a different colour, arousing suspicions. The non-commissioned officers of the regiment refused to accept the cartridges on 26 February. This information was conveyed to the commanding officer, Colonel William Mitchell; he took it upon himself to try to convince the sepoys that the cartridges were no different from those they had been accustomed to and that they need not bite it. He concluded his exhortation with an appeal to the native officers to uphold the honour of the regiment and a threat to court-martial such sepoys as refused to accept the cartridge. However, the next morning the sepoys of the regiment seized their bell of arms (weapons store). The subsequent conciliatory behaviour of Mitchell convinced the sepoys to return to their barracks.