High Quality Content by WIKIPEDIA articles! The Oklahoma Military Department is an agency of the state of Oklahoma that serves as the administrative agency for all matters concerning the Oklahoma National Guard and other state military organizations. Under the authority and direction of the Governor of Oklahoma as commander-in-chief, the agency is responsible for planning, establishing, and enforcing rules and procedures governing the administration, supply, and training of the Oklahoma National Guard, when not in the active service of the United States, the Oklahoma State Guard and the Oklahoma Unorganized Militia. The Department also maintains all state-owned or leased military facilities, including posts, camps, military reservations, and rifle ranges.