Military History Research Links 

United States 
Combat Studies Institute
U. of Kansas (one of the BEST!!)
National Archives
Historical Timelines
U.S. Air Force Museum  
U.S. Air Force Historical Research Agency
U.S. Army Military History Institute 
U.S. Army Military Police History Links
U.S. Army Mortuary Affairs
U.S. Navy Historical Center

Great Britain, Canada, & Commonwealth
Canadian Forces Staff College
British and Commonwealth Order of Battle
Canadian War Museum
Royal Navy Submarine Museum