WI 15th Inf Co A. Residence: Chicago, Illinois. Civil War: Unmarried. Enlisted for three years on 25 Sep 1861 at Chicago. Mustered 15 Nov 1861 at Madison, Wisconsin. Private. Transferred from Company A to Regimental Headquarters, near Murfreesboro, Tennessee, on 1 Sep 1862, and appointed Regimental Commissary Sergeant. Sent to hospital at Nashville, Tennessee, on 7 Aug 1863. On 31 Aug 1864, he was reported to have been absent sick in 24 Feb 1864. Demoted to ranks 1 Dec 1864 by order of Lt. Col. Ole Johnson, reason not given. Mustered out with Company A on 20 Dec 1864. Sources: (WHS Series 1200 boxes 76-3, 78-1; red book vol 20 p4, blue book vol 20 p14) (Buslett p351) (Ager p291, 292) (Ager p292) (Meeker) “Geisler, John”