Eligibility Requirements for American Legion Membership If you are currently on active duty, serving the United States honorably, anywhere in the world, or have served honorably during any of the following eligible war eras, we invite you to become a member of The American Legion. National Guard and Reservists having been Federally activated (including basic training) during these same war eras also meet the eligibility requirements.
NOTICE: As of Sep of 2019, Congress passed and the President signed "The Legion Act" which essentially now says that ANY honorable discharge Veteran that served 1 active day of service is eligible for membership in The American Legion. The below dates are also still Valid as well.
U.S. Merchant Marine eligible only from December 7, 1941 to December 31, 1946 (WWII)