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