Md. Code, Public Safety § 13–203

(a) There are two classes of State militia:

(1) the organized militia; and

(2) the unorganized militia.

(b) The organized militia of the State consists of:

(1) the National Guard;

(2) the Inactive National Guard; and

(3) the Maryland Defense Force.

(c) The unorganized militia consists of those individuals described under § 13-202 of this subtitle but who are not regularly enlisted or commissioned in the organized militia.