Ala. Code § 34-8A-55

Active duty military personnel, or their spouses, shall designate a home state where the individual has a current license in good standing. The individual may retain the home state designation during the period the service member is on active duty. Subsequent to designating a home state, the individual shall only change his or her home state through application for licensure in the new state, or through the process outlined in Section 34-8A-54.