The Bio of Governor James P Eagle states:
In June 1861, he enlisted as a private in the Fifth Arkansas Mounted Regiment and was assigned to Confederate units in Indian Territory; he was soon transferred to the Second Arkansas Mounted Riflemen, which was later made a part of the First Consolidated Arkansas Mounted Rifles.
The reference is Donovan, Timothy P., Willard B. Gatewood Jr., and Jeannie M. Whayne, eds. The Governors of Arkansas: Essays in Political Biography. 2d ed. Fayetteville: University of Arkansas Press, 1995.
Any idea what unit they might be referring to as the ”Fifth Arkansas Mounted Regiment“.