During the fall and winter of 1862, General Tuttle commanded the Union garrison at the vital supply town of Cairo, Illinois. In the spring of 1863, he was assigned command of a division in Maj. Gen. William T. Sherman's XV Corps. Tuttle went on to participate that summer in the Vicksburg Campaign and thereafter the capture of Jackson, Mississippi, where he again distinguished himself in action and parlayed his growing name recognition into a run for Governor of Iowa as a Democrat. However, in the autumn elections, Tuttle was soundly defeated by Republican William M. Stone, another veteran of Shiloh.Hubbell, p. 542.
