§27–301.

    A member is entitled to service credit:

        (1)    for service as a member;

        (2)    regained under § 27–302 of this subtitle by a member who redeposits accumulated contributions previously withdrawn;

        (3)    for prior service as provided in § 27–303 of this subtitle; or

        (4)    for military service as provided in Title 38 of this article.