Department of Defense Lapel Pin The Department of Defense is charged with the awesome responsibility of protecting American interests throughout the world and defending Americans at home. Headquartered at the Pentagon, it operates from more than 6,000 locations worldwide and supports more than four million active-duty, National Guard and Reserve, and retired military personnel, as well as over 650,000 civilian employees. This handsome brass lapel pin, depicting the official emblem of the Department of Defense rendered in full-color enamel, is a stunning tribute to the mission of this vital institution. It is the perfect gift for any current military or civilian member of the Department of Defense or as a souvenir of service for former or retired personnel.