• XVIII Corps (Germany)
  XVIII Corps (Germany)
  -History:XVIII. ArmeekorpsThe XVIII. Armeekorps was formed in Salzburg, Austria, on 1 April 1938, following the Anschluss of Austria into the German Reich. During the life of the XVIII. Armeekorps, they took part in the Polish campaign, Fall Weiss, and performed occupation duties in France. On the...
  
  , a unit of the German Army
• XVIII Corps (German Empire)
  XVIII Corps (German Empire)
  The XVIII Army Corps was a corps of the Imperial German Army. It was formed on April 1, 1899 and was headquartered in Frankfurt am Main...
  
  , a unit of the Imperial German Army
• XVIII Corps (Ottoman Empire)
  XVIII Corps (Ottoman Empire)
  The XVIII Corps of the Ottoman Empire was one of the corps of the Ottoman Army. It was formed during the World War I.- Order of Battle, October 29, 1912 :...
  
  , a unit of the Ottoman Army
• XVIII Corps (United Kingdom)
  XVIII Corps (United Kingdom)
  The British XVIII Corps was a British infantry corps during World War I.- History :British XVIII Corps was formed in France in January 1917 under Lieutenant General Sir Ivor Maxse...
  
  , a unit of the British Army
• XVIII Airborne Corps (United States), a unit of the United States Army
• XVIII Corps (ACW)
  XVIII Corps (ACW)
  XVIII Corps was a corps of the Union Army during the American Civil War.- Origins and makeup :The XVIII Corps was created on December 24, 1862, and initially composed of five divisions stationed in North Carolina, making it one of the largest in the Union Army , placed under the command of General...
  
  , a unit of the Union (Northern) Army during the American Civil War

See also

• 18th Division (disambiguation)
• 18th Brigade (disambiguation)
• 18th Regiment (disambiguation)
• 18th Battalion (disambiguation)
• 18 Squadron (disambiguation)