Arlington Hall file photo [26023]

Arlington Hall

Type   178 Government Building
Historical Name of Location   Arlington, Virginia, United States
Coordinates   38.867600000, -77.103600000


ww2dbaseArlington Hall was founded in Arlington, Virginia, United States in 1927 as a private post-secondary women's educational institution. In 1940, it became a non-profit institution. In 1941, it operated under the name of Arlington Hall Junior College for Women, and its campus was about 100 acres in size. In Jun 1942, it was taken over by the United States Army under the provisions of the War Powers Act, and was turned over to the US Army Signals Intelligence Service. The cryptanalysts at Arlington Hall focused on breaking Japanese codes.

ww2dbaseArlington Hall remained in military and government use until the time of this writing, having been a facility for US Army, National Security Agency, Defense Intelligence Agency, State Department, and US Coast Guard.

ww2dbaseSource: Wikipedia

Last Major Update: Nov 2016

Arlington Hall Interactive Map

Arlington Hall Timeline

10 Jun 1942 Under the War Powers Act the US Army took possession of Arlington Hall, a former girls' school, in Virginia, United States as its base for the Signals Intelligence Service. During the war Arlington Hall would concentrate its efforts mainly on decrypting Japanese codes.
1 Jan 1977 The United States Army Intelligence and Security Command was created with its headquarters at Arlington Hall, Arlington, Virginia, United States.


Arlington Hall main building, Arlington, Virginia, United States, circa 1943US Army Signals Intelligence Service cryptanalysts at Arlington Hall, Arlington, Virginia, United States, circa 1943

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Visitor Submitted Comments

1. Commenter identity confirmed Alan Chanter says:
2 Nov 2016 06:54:11 AM

On 19 January 1942, US Secretary of War, Henry Stimson, appointed as a special assistant, a Brooklyn-born lawyer named Alfred McCormack with a brief to examine the whole field of Sigint (Signals Intelligence gathering). Thereafter events moved swiftly. The Signals Intelligence Service moved from Washington’s Munitions Building to the former a former girls’ school in Virginia - Arlington Hall – ‘The Salt Mines’ – which soon occupied several dozen brick and wood-frame buildings in the grounds, and eventually employed 7,000 people, many of them civilians and women. ‘A’ section handled diplomatic and clandestine material. ‘B’ Section studied the Japanese Army; its card index eventually identifying 46,000 enemy officer. ‘C’ Section (‘Bunkers Hill’) addressed German material forwarded from Bletchley Park.

Despite repeated protests, the Hall was, until 1944, unable to obtain control over interception; responsibility for which was jealously guarded by the Army Signal Corps which maintained its own intercept arm and cryptographic school at Vint Hill Farms at Warrenton, Virginia. This was a serious handicap for the Army cryptanalyst who needed to create a network of interception stations from scratch until the last stages of the war. Nevertheless the achievements of Bletchley Park, Arlington Hall and the US Navy’s Op-20-G during the war would elevate intelligence gathering and codebreaking from a little-respected branch of staffwork, to unprecedented importance in operational planning.
2. Sherwood Lapping says:
20 Dec 2017 10:55:12 AM

My grandfather Col Edward Lapping headed Special Branch at Arlington Hall during ww2. Does anyone know what Special Branch did?

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Modern Day Location
WW2-Era Place Name Arlington, Virginia, United States
Lat/Long 38.8676, -77.1036
Arlington Hall Photo Gallery
Arlington Hall main building, Arlington, Virginia, United States, circa 1943
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