3rd Cavalry Regiment (Australia)
3rd Cavalry (India)
3rd Bengal Cavalry, of the Indian Army
3rd Bengal Light Cavalry, of the East India Company
3rd Madras Cavalry, of the East India Company
3d Armored Cavalry Squadron (South Vietnam)
3rd Cavalry Regiment (United States)
3rd Arkansas Cavalry Regiment (Confederate), a Confederate regiment of the American Civil War
3rd Arkansas Cavalry Regiment (Union), a Union regiment of the American Civil War
3rd Colorado Cavalry Regiment, a Union regiment of the American Civil War
3rd Regiment Indiana Cavalry, a Union regiment of the American Civil War
3rd Regiment Illinois Volunteer Cavalry, a Union regiment of the American Civil War
3rd Regiment Iowa Volunteer Cavalry, a Union regiment of the American Civil War
3rd Kentucky Cavalry Regiment (Union), a Union regiment of the American Civil War
3rd Michigan Volunteer Cavalry Regiment, a Union regiment of the American Civil War
3rd Ohio Cavalry, a Union regiment of the American Civil War
3rd Virginia Cavalry, a Confederate regiment of the American Civil War
3rd West Virginia Volunteer Cavalry Regiment, a Union regiment of the American Civil War
3rd Wisconsin Volunteer Cavalry Regiment, a Union regiment of the American Civil War

This disambiguation page lists articles about military units and formations which are associated with the same title.
If an internal link referred you to this page, you may wish to change the link to point directly to the intended article.

Corps

Divisions

Brigades

Regiments and battalions