The One Hundred and Fortieth Infantry was organized at Camp Butler, June 18, 1864, and mustered into the United States Service on that date and on the same day left by rail for Cairo; thence by boat for Memphis. From Memphis it marched to White River, a distance of thirty miles east, and was there formed into divisions and placed at different points along the line of the railroad between there and Holly Springs. It remained there about three months guarding the railroad, after which it moved to Memphis and did guard duty until ordered to Camp Fry, Chicago, for muster out, which occurred October 29, 1864. After having given up their arms they were solicited by Adjutant General Fuller to re-organize and march through Missouri in pursuit of General Price, which they did. This trip occupied about 6 weeks, when the Regiment returned to Camp Fry, and was finally dismissed after serving about 5 months.