Wolfe was appointed major on the 52nd Indiana Infantry Regiment, October 25, 1861. He was promoted to lieutenant colonel, April 26, 1862, and colonel, September 19, 1862. He commanded Brigade 3, Division 3, XVI Corps (Union Army), Army of the Tennessee between January 25, 1864, and February 28, 1864, between May 21, 1864, and September 2, 1864[1] and between October 1864 and December 5, 1864.[2] He commanded Brigade 3, Division 2, Detachment of XVI Corps in the Department of the Cumberland from December 5, 1864, to February 18, 1865.[2] He was mustered out of the volunteers on January 31, 1865.[3]
^Although this date is before the date Eicher gives for the end of his final command, it is the date that Eicher, 2001, p. 579 gives for his mustering out.