1st Armored Division
1st Battle of St Albans
1st Belgian Infantry Brigade
1st Canadian Armoured Brigade
1st Canadian Infantry Division
1st Canadian Tank Brigade
1st Cavalry Division
1st century
1st century BC
1st Commando Regiment
1st Czechoslovakian Armoured Brigade
1st Division
1st Extreme Ironing World Championships
1st Infantry Division
1st Mariner Bank Arena
1st millennium AD
1st millennium BC
1st Philippine Artillery Regiment
1st Polish Armoured Division