The League is the only Federally Chartered Marine Corps related veterans organization in the country. Since its earliest days, the Marine Corps League has enjoyed the support and encouragement of the active duty and Reserve establishments of the U. S. Marine Corps. Today, the League boasts a membership of more than 76,000 men and women, officer and enlisted, active duty, Reserve Marines, honorably discharged Marine Veterans and qualified Navy FMF Corpsmen and is one of the few Veterans Organizations that experiences increases in its membership each year.
The Marine Corps League Auxiliary was chartered on September 4, 1937 as a subsidiary organization of the Marine Corps League. On August 25, 1950, the Auxiliary was incorporated under the laws of the District of Columbia as an affiliate of the Marine Corps League.