http://www.asmic.org/

The American Society of Military Insignia Collectors
(ASMIC) is the oldest and largest organization of
collectors of military insignia in the world.
Founded in 1937 by a small group of enthusiasts and
chartered as a non-profit organization, today the
Society is 'home' to nearly 3,000 dedicated collectors
in the United States and two dozen foreign countries.
Whether you are a collector of military insignia
or a student of heraldry or military history,
whether an expert or a novice, you will find
that membership in ASMIC has many advantages.