The 46th is listed as Crabtree's Regiment on the NPS site, and in the records regarding the execution of members of the command in retaliation for murders during Price's Raid, the unit is referred to as Crabtree's Cavalry, but as I understand it Coleman was in command from formation until surrender. Crabtree does not appear on the rolls as surrendering with the unit. Guerrilla warfare in Civil War Missouri, 1862, by By Bruce Nichols Mentions a Crabtee who was a Guerrilla and may have been associated with Coleman early on but that Crabtree is killed in the fall of 1862. I found a Lt. Col. John Wesly Crabtree list on a family tree site,

John Wesley Crabtree was a Lt. Col. during the civil war. He is buried at Bethesda Cemetery in Rose Bud, Ark., his grave is the next row over from his second wife's (Amanda Clementine Barger - she married twice after the colonel died.)

CRABTREE, J.W. Lt Col - F&S Coleman's Regt AR Cav. Captured 14 Dec 1864 in Woodruff Co, AR. Released on oath 7 May 1865. Ht 5' 9", eyes blue, hair drk, complx fair, residence: Searcy, White Co, AR

Can anyone explain why Coleman's 46th Arkansas Mounted Infantry Regiment is referred to as Crabtree's Regiment?