United States Army : http://www.army.mil/ United States Air Force : http://www.af.mil/ United States Navy : http://www.navy.mil/ United States Marine Corps : http://www.usmc.mil/ United States Coast Guard : http://www.uscg.mil/ United States Merchant Marines : http://www.usmm.org/ The Pentagon : http://www.defenselink.mil/pubs/pentagon