Two related commands were known as the 1st Alabama Regiment. The first of these entered Confederate service (the first to do so) near Pensacola FL on April 8, 1861, enlisting for twelve months. This regiment disbanded at Pensacola on Jan. 16, 1862. Those whose terms had not yet expired mustered out at Island Ten, Mar. 20, 1862. Seven companies reenlisted to form the basis of the 1st Alabama Artillery Regiment at Fort Barrancas FL, Mar. 5, 1862.
War Department clerks filed all service records for officers and men of both commands as if the two regiments were the same. They are labeled 1st Alabama Infantry, which is a mistake. Officers and men organized for artillery service and served as artillery until the last thirteen months of the war.
For further detail on Confederates captured at Island Ten, see Larry J. Daniel and Lynn N. Bock, Island Ten: Struggle for the Mississippi Valley, p. 146. Prisoners were sent up river to Cairo IL, and forwarded by rail from that point to various camps. The larger number of enlisted men went to Camp Douglas IL. Smaller numbers went to Camp Butler IL and Camp Randall WS. Officers were taken to Sandusky OH and imprisoned at Johnson's Island. Enlisted men were released for exchange on Sept. 8, 1862, and sent down river to Vicksburg MS. These men were released at that point on Sept. 23, 1862.