Hi Magian
If they did only the 1911 one survives. During the late 18th and the 19th centuries, up to 1888-1898 depending upon the unit, they took a monthly muster roll, which have survived. They were sent to the War Office every three or six months. So in effect there was an going count of the number of men in the army. So you need to research the muster rolls in Kew.
They would have kept a depot in the UK. In 1860 it was in Sterling. btw..the army list of that year says the battalion left 3rd March 1851, or are you American?
Ken