Organized at Camp Chase for three months' service May-June, 1862. Zinn's Battalion moved to Kentucky and participated in operations against Morgan July, 1862. Prison guard at Camp Chase, Ohio, till September. Zinn's Battalion moved to Cincinnati, Ohio, and participated in the operations for the defence of that city against Kirby Smith's threatened attack August-September. Mustered out September 23 and September 27, 1862.
