21st Cavalry Division (US)
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The 21st Cavalry Division was a division of the United States Army National Guard located in the north eastern United States. The division was composed of personnel from the
New York New York most commonly refers to: * New York City, the most populous city in the United States, located in the state of New York * New York (state), a state in the northeastern United States New York may also refer to: Film and television * '' ...
, New Jersey, Pennsylvania and Rhode Island Army National Guards. The division was created from the perceived need for additional cavalry units after the First World War. It numbered in succession of the Regular Army Divisions, which were not all active at its creation.


History

The division was constituted in 1921 and assigned to the First Army. Not all authorized units were active during the division's lifetime. The division did not participate in the First Army maneuvers in 1935, 1939, and 1940. The 21st was inactivated on 1 October 1940 and disbanded on 1 November 1940. The division staff personnel were reassigned to the serve as the Brigade Staff for the 102nd Coast Artillery Brigade (
Anti-Aircraft Anti-aircraft warfare, counter-air or air defence forces is the battlespace response to aerial warfare, defined by NATO as "all measures designed to nullify or reduce the effectiveness of hostile air action".AAP-6 It includes surface based, ...
) and the
Headquarters Battery In United States Army units, a Headquarters and Headquarters Company (HHC) is a company-sized military unit, found at the battalion level and higher. Considered one unit, a Headquarters and Headquarters Company is essentially two elements with ...
was manned by personnel from the division headquarters troop and the 51st Cavalry Brigade. Major General Nathaniel Hillyer Egleston (
New York Army National Guard The New York Army National Guard is a component of the New York National Guard and the Army National Guard. Nationwide, the Army National Guard comprises approximately one half of the United States Army's available combat forces and approximat ...
) gave up command of the 21st and assumed command of the 102nd on 5 September 1940.


Organization

*
Headquarters Headquarters (commonly referred to as HQ) denotes the location where most, if not all, of the important functions of an organization are coordinated. In the United States, the corporate headquarters represents the entity at the center or the to ...
, New York City, New York **Headquarters Troop,
West New Brighton West New Brighton (also called West Brighton) is a neighborhood of Staten Island, New York City, situated along the central North Shore. The neighborhood is bordered by New Brighton to the east, Port Richmond to the west, the waters of the Kil ...
, New York *51st Cavalry Brigade, New York **Headquarters Troop,
Staten Island Staten Island ( ) is a borough of New York City, coextensive with Richmond County, in the U.S. state of New York. Located in the city's southwest portion, the borough is separated from New Jersey by the Arthur Kill and the Kill Van Kull an ...
, New York **
101st Cavalry Regiment ''This page is about the 101st Cavalry Regiment. The 101st Cavalry Group was its headquarters unit.'' The 101st Cavalry Regiment is a unit of the New York National Guard that has existed in various forms since 1838 and which saw service in the A ...
(New York National Guard), Brooklyn, New Yor

**
121st Cavalry Regiment 1 (one, unit, unity) is a number representing a single or the only entity. 1 is also a numerical digit and represents a single unit of counting or measurement. For example, a line segment of ''unit length'' is a line segment of length 1. I ...
(New York National Guard), Rochester, New Yor

*59th Cavalry Brigade, Newark, New Jersey **Headquarters Troop, Newark, New Jersey ** 102d Cavalry Regiment ( New Jersey National Guard), Newark, New Jerse

** 110th Cavalry Regiment (United States, 1921–1940), 110th Cavalry Regiment (Massachusetts National Guard), Boston, Massachusett

*
112th Field Artillery Regiment The 112th Field Artillery Regiment is a Field Artillery Branch regiment of the New Jersey Army National Guard first formed in April 1917. In December 1941, it was the last field artillery regiment in the U.S. Army to convert from horse-drawn to ...
, Trenton, New Jerse

*Headquarters Special Troops, West New Brighton, New York **21st United States Army Signal Corps, Signal Troop, West New Brighton, New York **125th
Ordnance Ordnance may refer to: Military and defense *Materiel in military logistics, including weapons, ammunition, vehicles, and maintenance tools and equipment. **The military branch responsible for supplying and developing these items, e.g., the Unite ...
Company A company, abbreviated as co., is a Legal personality, legal entity representing an association of people, whether Natural person, natural, Legal person, legal or a mixture of both, with a specific objective. Company members share a common p ...
, (Medium), Connecticut **21st Tank Company (Light), New York **21st Reconnaissance
Squadron Squadron may refer to: * Squadron (army), a military unit of cavalry, tanks, or equivalent subdivided into troops or tank companies * Squadron (aviation), a military unit that consists of three or four flights with a total of 12 to 24 aircraft, de ...
, Boston, Massachusetts **125th Engineer Squadron, New York **121st Medical Squadron, New York **121st Quartermaster Squadron, Boston, Massachusetts


See also

* United States Army branch insignia * List of armored and cavalry regiments of the United States Army *Headquarters Troop, 51st Cavalry Brigade Armor

*New York Army National Guard Heraldr


References

*
U.S. Army Order of Battle 1919–1941, Volume 2. The Arms: Cavalry, Field Artillery, and Coast Artillery, 1919–41
' by Lieutenant Colonel (Retired) Steven E. Clay, Combat Studies Institute Press, Fort Leavenworth, Kansas, 2011

The Evolution of Divisions and Separate Brigades, by John B. Wilson, Center of Military History, Washington D.C., 1998 *
Cavalry Regiments of the U S Army
' by James A. Sawicki Wyvern Pubns; June 1985 *

The Trading Post, Journal of the American Society of Military Insignia Collectors, April- June 2009, pages 20 & 21


External links

* Formations of the United States Army {{Use dmy dates, date=June 2017 21 Military units and formations established in 1921 Military units and formations disestablished in 1940