For purposes of this chapter, the following definitions apply:
(a) “Service member” means either of the following:
(1) A member of the militia, as defined in Section 120, called or ordered into state military service pursuant to Section 143 or 146, or in federal or state military service pursuant to Title 10 or 32 of the United States Code.
(2) A reservist of the United States Military Reserve who has been ordered to full-time federal active duty by the President of the United States pursuant to Title 10 of the United States Code.
(b) “Military service” means either of the following:
(1) Full-time active state service or full-time active federal service of a service member who is a member of the militia, as described in paragraph (1) of subdivision (a).
(2) Full-time active duty of a service member who is a reservist, as described in paragraph (2) of subdivision (a), for a period of 30 consecutive days.