United States Army MEDDAC Aberdeen Proving Grounds Unit Crest (Your Health Is Our Goal)Criteria: This is the Unit Crest for the MEDDAC Aberdeen Proving Grounds Group, based out of APG, Maryland. The castle featured on the center of the crest is derived from the city crest of Aberdeen Scotland, and infers the units home location. Unit Crests are worn on the Epaulets of the Army Class A Uniform jacket.Note: Sold in pairs (i.e., if you order a quantity of 1 you will receive two Unit Crests).