No company designation/Field & Staff
10th Cavalry Regiment was organized in December, 1863, using M. L. Young's 11th Missouri Cavalry Battalion as its nucleus. It contained 559 officers and men. The unit served in C. Greene's and J. B. Clarke's Brigade, Trans-Mississippi Department, and skirmished in Arkansas and saw action in Price's Missouri Expedition. During this operation it reported 16 killed, 56 wounded, and 73 missing. The regiment was included in the surrender in June, 1865. Its commanders were Colonel Robert R. Lawther, Lieutenant Colonel Merritt L. Young, and Major George W. C. Bennett.
This unit originally was Col. Emmett MacDonald's Missouri Cavalry Regiment. Due to casualities and MacDonald's death, it was reduced to become the 11th Missouri Cavalry Battalion under command of Lt. Col. Merritt L. Young. In fall of 1863, after it increased back to regimental size, it was redesignated the 10th Missouri Cavalry and commanded by Col. Robert R. Lawther.