Organized with seven companies on July 15, 1861. Served with BG Benjamin McColloch's brigade in northwest Arkansas and along the border with the Indian Territory from August to December of 1861. Fought with McColluch's Brigade at Wilson's Creek on August 10, 1861. Augmented with additional companies to fill out as a regiment, and reorganized as the 21st (McRae's) Infantry Regiment on December 3, 1861.
Officers: Lt. Col. Dandridge McRae; Maj. Thomas H. McRae.
Also Known As: 21st Arkansas Infantry Regiment