Ala. Code § 31-2-3

The militia of the state shall be divided into the organized militia, the retired list, and the unorganized militia, which together shall constitute the state military forces. The organized militia shall be composed of: An army national guard, an air national guard, and a space national guard, which forces, together with an inactive national guard, shall comprise the Alabama National Guard; the Alabama Naval Militia; and the Alabama State Guard, whenever any of the forces are organized by the Governor pursuant to existing laws. The National Guard, army, air, or space, shall consist of organizations and units that the Commander in Chief may from time to time authorize to be formed, all to be organized in accordance with the laws of the United States affecting the National Guard, army, air, and space, and the regulations issued by the appropriate Secretary of the Department of Defense.