I am looking for any information on my maternal great-grandad's service during the Civil War.

George Washington Longstreth
born: 02 Mar. 1832 Morgan Co., OH
died: 05 Nov. 1924 Cameron, MO
He moved from Ohio to Kidder, MO in 1857 and
"enlisted in the Missouri State Militia" (Union)
in the "early 1860s" and "served to the end of the
conflict, when he was honorably discharged."
George married Nancy Florentine Scott of Plattsburg, MO
13 Aug. 1868 and moved to first Mirable, MO and then in
1870, they moved near Cameron, then moved into Cameron
in 1903.