| Panama Canal Department | |
|---|---|
 Panama Canal Department Shoulder Sleeve Insignia | |
| Active | 26 June 1917–1947 |
| Country | United States |
| Type | Department |
| Role | Defense of the Panama Canal Zone |
| Part of | War Department |
| Garrison/HQ | Quarry Heights |
| Commanders | |
| Notable commanders | Malin Craig |
The Panama Canal Department was a department (geographical command) of the United States Army, responsible for the defense of the Panama Canal Zone between 1917 and 1947.
The Isthmian Canal Commission and the Panama Canal Guard of 1904–1914 both played a pivotal role in the construction and early defense of the Canal. [1] With the active support and encouragement of the United States, Panama declared its independence from Colombia on 3 Nov. 1903 and that same month, the United States received the right to build and administer the Panama Canal.[ citation needed ]
On 8 Mar. 1904, President Theodore Roosevelt appointed an Isthmian Canal Commission (ICC), composed primarily of Army officers, to govern the Canal Zone and to report directly to the Secretary of War. [2]
In 1907, President Roosevelt appointed Army Lt. Col. George W. Goethals to the post of Chief Engineer of the ICC, officially turning construction of the Canal into a military project. To more adequately protect the Canal from external threats, the Army conducted an on-site survey in 1910 and began building defensive fortifications in 1911—to include Fort De Lesseps, Fort Randolph, and Fort Sherman on the Atlantic side, and Fort Amador and Grant on the Pacific side. On 4 Oct. 1911, a regiment of the U.S. Army 10th Infantry arrived at Camp E.S. Otis, on the Pacific side of the isthmus. They would form the nucleus of a mobile force that grew to include other infantry, cavalry, engineer, signal, and field artillery units, as well as a Marine battalion that had protected the Canal since 1904. Together these troops, under the control of the ICC, were known as the Panama Canal Guard.[ citation needed ]
The Panama Canal Department was created as a separate command of the United States Army on 26 June 1917 by separation from the Eastern Department. The department was initially headquartered at Ancón, relocating to Quarry Heights on 1 April 1920. It was responsible for the defense of the Canal Zone, including land areas, coastal defenses, harbor defenses, air defenses, and sea defenses within medium bomber range. The department was also responsible for the laying, maintaining, and clearing of harbor defense minefields that were to be placed at the canal entrance in event of a war. In event of a war, it was to defend against landings at either end of the Canal, coordinating with forces of the United States Navy. [3]
The department controlled the major land force in the Canal Zone, the Panama Canal Division, which was activated in 1921. The division included two infantry brigades: the 19th, responsible for the Atlantic side of the canal, and the 20th, responsible for the Pacific side. The department included a separate command, the Panama Coast Artillery District, which was to provide coast defense against seaborne invasion. [3] The division was disbanded in 1932.
Later, the Panama Mobile Force was activated on 16 February 1940 by Panama Canal Department commander, Lieutenant General Daniel Van Voorhis in order to improve defense of the Panama Canal Zone. Four infantry and one engineer regiment, plus two artillery battalions were assigned to the Mobile Force, even after World War II began. The plan to defend the Canal Zone was to conduct a mobile defense in depth beginning at the beaches and not by preparing and holding static defense positions. The Atlantic side was considered the least likely invasion route because the few landing areas there were too small to allow the discharge of numerous forces simultaneously.
On 10 February 1941, the Caribbean Defense Command was established as a theater command responsible for tactical control of the Panama Canal and Puerto Rican Departments, as well as bases in the Caribbean, [4] eventually taking control of air and naval forces as well. It was co-located with the department headquarters at Quarry Heights, under the command of the department commander. During World War II, the department reached its peak strength in January 1943, when 68,000 men were under its control. On 1 November 1947 it was replaced by United States Army Caribbean, part of the joint United States Caribbean Command. [5]
The following officers are known to have commanded the department: [4] [6]
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