The Missouri in the Civil War Message Board

60th Reg't EMM

I found a card at the State of Missouri website for my ggrandfather, Wm G. Simmons. It says he was a 4th sergeant in Co. C of the 60th Reg't EMM from 6 Dec 1862 til his death in Butler on 16 Feb 1863.
Can anyone tell me what happened in Butler on 16 Feb 1863 or anything about the 60th Reg't EMM?