Marine Corps Martial Arts Program
The Marine Corps Martial Arts Program (MCMAP, /ˈmɪkmæp/) is a combat system developed by the United States Marine Corps to combine existing and new hand-to-hand and close quarters combat (CQC) techniq...
Marine Corps Martial Arts Program - Wikipedia
Dan (rank)
The dan (段) ranking system is used by many Japanese organizations to indicate the level of one's ability (expertise) within a certain subject matter. As a ranking system, it was originally used at...
Dan (rank) - Wikipedia