As used in this chapter, the following terms have the following meanings:
(1) ACTIVE DUTY. Full-time duty in the active military service of the United States. Active duty includes full-time training duty, annual training duty, and attendance, while in the active military service, at a school designated as a military service school by law or by the secretary of the military department concerned. Active duty does not include full-time national guard duty.
(2) MILITARY SERVICE. Any of the following:
a. Active duty.
b. If the service member is a member of the Alabama National Guard, service under a call to active service authorized by the President or the Secretary of Defense of the United States for a period of more than 30 consecutive days under §32 USC 502(f) to respond to a national emergency declared by the President of the United States and supported by federal money.
c. A period during which the service member is absent from active duty because of sickness, wounds, leave, or other lawful cause.
(3) SERVICE MEMBER. An individual who is in military service and is a member of the armed services or reserve forces of the United States or a member of the Alabama National Guard.