US cavalry

United States Cavalry
Cavalry branch plaque
Active	1775–present
Country	United States of America
Branch	United States Army
Type	Cavalry
Role	Reconnaissance, security (e.g., flank screening, advance guard, rear guard, combat out post, etc.) economy of force missions
Patron	Saint George
Insignia
Branch insignia

The United States Cavalry, or U.S. Cavalry, was the designation of the mounted force of the United States Army from the late 18th to the early 20th century. The Cavalry branch became the Armor branch in 1950, but the term "Cavalry" remains in use in the U.S. Army for mounted (ground and aviation) reconnaissance, security, and target acquisition (RSTA) units based on their parent Combat Arms Regimental System (CARS) regiment. Cavalry is also used in the name of the 1st Cavalry Division for heraldic/lineage/historical purposes.

(Note: Some combined arms battalions (i.e., consisting of a combination of tank and mechanized infantry companies) are designated as armor formations, while others are designated as infantry organizations. These "branch" designations are again, heraldic/lineage/historical titles derived from the CARS regiments to which the battalions are assigned.)

Originally designated as United States Dragoons, the forces were patterned after cavalry units employed during the Revolutionary War. The traditions of the U.S. Cavalry originated with the horse-mounted force which played an important role in extending United States governance into the Western United States after the American Civil War.

Immediately preceding World War II, the U.S. Cavalry began transitioning to a mechanized, mounted force. During World War II, the Army's cavalry units operated as horse-mounted, mechanized, or dismounted forces (infantry). The last horse-mounted cavalry charge by a U.S. Cavalry unit took place on the Bataan Peninsula, in the Philippines. The 26th Cavalry Regiment of the Philippine Scouts executed the charge against Japanese forces near the village of Morong on 16 January 1942.