18th Cavalry may refer to: Divisions 18th Cavalry Division (Soviet Union) Regiments and battalions 18th Cavalry (India) 18th Cavalry Regiment (United States) 18th Corps Cavalry Regiment American Civil War units Union Army 18th Pennsylvania Cavalry Regiment Confederate Army 18th Arkansas Cavalry Battalion 18th Mississippi Cavalry Battalion 18th Virginia Cavalry Regiment See alsoSee also 18th Division (disambiguation) 18th Regiment (disambiguation) 18th (disambiguation)