Ala. Code § 31-2-5: Composition of Unorganized Militia.

The unorganized militia shall consist of all able-bodied male resident citizens of the state and all able-bodied resident males who have declared their intention to become citizens of the United States, between the ages of 17 and 45, and of such other persons, male and female, as may, upon their own application, be enlisted or commissioned therein, subject to any existing law, who are not serving in any force of the organized militia and who are not on the state retired list.