What Is 562nd Air Defense Artillery Regiment

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Last updated: April 17, 2026

Quick Answer: The 562nd Air Defense Artillery Regiment is a United States Army air defense unit with origins tracing back to World War II, reorganized under the U.S. Army Regimental System. It has no active battalions currently in service, but its lineage is preserved for historical and ceremonial purposes.

Key Facts

The 562nd Air Defense Artillery Regiment was originally constituted in 1942 as the 562nd Coast Artillery Battalion.
It was activated in 1943 and served in the Pacific Theater during World War II.
The regiment was reorganized in 1957 under the U.S. Army Regimental System.
It has been inactive since the late 20th century with no currently active battalions.
The unit's lineage and honors are preserved by the U.S. Army Center of Military History.

Overview

The 562nd Air Defense Artillery Regiment is a historical unit within the United States Army, originally formed during World War II to provide critical air defense capabilities. Though no longer active in operational service, its lineage and contributions remain part of the Army's military heritage.

Initially established as a coast artillery unit, the regiment evolved over time to meet changing defense needs, particularly in anti-aircraft warfare. Its legacy is maintained through official records and honors preserved by the U.S. Army.

Constituted in 1942 as the 562nd Coast Artillery Battalion, the unit was designed to defend U.S. territories from aerial and naval threats during World War II.
Activated in 1943 at Camp Pendleton, Virginia, the regiment underwent intensive training before deployment to the Pacific Theater.
Served in the Pacific during World War II, providing air defense for key islands and supporting Allied advances against Japanese forces.
Reorganized in 1957 under the U.S. Army Regimental System, allowing its lineage to continue even without active battalions.
Currently inactive, with no operational battalions assigned, though its history is officially recognized and preserved by the Army.

How It Works

The 562nd Air Defense Artillery Regiment operated under standard U.S. Army organizational principles, with a focus on air defense missions using anti-aircraft artillery and later missile systems.

World War II Role: The unit was initially equipped with 90mm anti-aircraft guns, providing critical defense against enemy aircraft during island campaigns in the Pacific.
Unit Structure: Organized into batteries and battalions, each battery typically had four gun sections and a fire control center for target acquisition.
Fire Control Systems: Utilized the SCR-268 radar and Gun Data Computer M9 to calculate firing solutions and increase accuracy against fast-moving aircraft.
Mobility: The regiment was semi-mobile, with equipment transported by trucks and landing craft, allowing rapid deployment across Pacific islands.
Reorganization in 1957: Transitioned under the U.S. Army Regimental System, which allowed inactive units to retain their lineage and honors.
Modern Relevance: Though inactive, the regiment's history informs current air defense doctrine and training within the U.S. Army Air and Missile Defense Command.

Comparison at a Glance

Below is a comparison of the 562nd Air Defense Artillery Regiment with similar units in terms of activation, service history, and current status.

Unit	Constituted	Active Service Period	Primary Theater	Current Status
562nd Air Defense Artillery	1942	1943–1959, inactive since	Pacific Theater	Inactive (lineage preserved)
1st Air Defense Artillery Regiment	1917	Still active	Global	Active
5th Air Defense Artillery Regiment	1932	Intermittent service	Europe, Pacific	Active battalions
62nd Air Defense Artillery	1940	1941–1945, 1950s	Europe	Inactive
43rd Air Defense Regiment	1918	WWI, WWII, Cold War	Atlantic, Pacific	Lineage preserved

This table highlights how the 562nd fits within the broader context of U.S. Army air defense units. While many regiments have been reactivated or modernized, the 562nd remains preserved as a historical unit, reflecting changes in military structure and defense priorities over the 20th century.

Why It Matters

The 562nd Air Defense Artillery Regiment plays a symbolic and educational role in understanding the evolution of U.S. air defense strategy and military organization.

Historical Significance: The regiment's service in the Pacific underscores the importance of air defense in securing Allied victories during World War II.
Military Heritage: Preserving its lineage honors the soldiers who served and maintains institutional memory within the U.S. Army.
Doctrine Development: Lessons from its operations influenced later air defense tactics, especially in mobile and island warfare scenarios.
Educational Value: Military academies and historians study units like the 562nd to understand mid-20th century defense systems and command structures.
Ceremonial Role: Though inactive, the regiment may be invoked in ceremonies or unit lineage acknowledgments to honor past service.
Lineage Preservation: The U.S. Army Center of Military History maintains records, ensuring future generations can access its contributions.

While the 562nd Air Defense Artillery Regiment is no longer active, its legacy endures as part of America's military history, reflecting the nation's evolving defense needs and commitment to honoring past service.