At the beginning of the war, the Arkansas Succession Convention created the Provisional Army of Arkansas. The Provisional Army was to consist of two divisions: the 1st Division in the western part of the state was to be commanded by Brigadier General Pearce, and the 2nd Division in the eastern half of the state, commanded by Major General James Yell. The unit's designation as the 3rd Regiment, Arkansas State Troops has its origins in the confusion caused by Brigadier General Nicholas B. Pearce's failure to comply with the numbering system for regiments adopted by the Arkansas Military Board. The Military Board authorized a 1st and 3rd Arkansas Regiment of State Troops. The 1st Regiment was commanded by Colonel
Patrick R. Cleburne and was organized a Mound City, in the 2nd or Eastern Division of the Army of Arkansas. The Military Board had authorized a 3rd Regiment of State Troops as a cavalry regiment under Colonel DeRosey Carroll, and ordered it to join the 1st Division" of the Army of Arkansas commanded by General Nicholas B. Pearce in
northwest Arkansas. The free-spirited General Pearce ignored the unit designations authorized by the Military Board, and assigned his own designations, based on when each regiment showed up in camp to muster. The first units to arrive at the designate assembly point were naturally the mounted units which became Carroll's regiment, so the 3rd Regiment Arkansas State Troops was re-designated the 1st Regiment. The officially sanctioned 2nd Regiment Arkansas State Troops, under Colonel John R. Gratiot, arrived at the assembly point third, and was immediately renamed the 3rd Regiment. Thus, all accounts of the State Troops in northwest Arkansas, including the battle of Wilson's Creek, refer to Gratiot's regiment as the 3rd Arkansas. This designation also leads to confusion with the other, more famous,
3rd Arkansas, commanded by Colonels
Albert Rust and
Van H. Manning. The Rust/Manning "3rd Arkansas", was not a regiment that was ever officially authorized by the Arkansas Military Board. By the time that several volunteer companies in
South Arkansas had recruited and organized, the State had already reached its original goal of eight regiments, so the services of these new companies were declined on the thought that war would not last long. These companies decided to go to Virginia and volunteer their services there. This group of regiments moved to
Lynchburg, Virginia and organized themselves into a regiment, and elected Albert Rust as their colonel. They were mustered into service by the Confederate War Department as the 3rd Regiment Arkansas Volunteers. There are those to this very day who insist that Rust's 3rd Arkansas was the same unit that fought at Wilson's Creek, despite unimpeachable documentation showing that Rust's unit was camped on the Greenbrier River in Virginia at the time of the battle. == Formation ==