P.O. Box 1142

P.O. Box 1142 was the cover name for a top-secret U.S. military intelligence installation at Fort Hunt, Virginia (today Fort Hunt Park on the George Washington Memorial Parkway), during World War II. The mailing address in Alexandria, Virginia, was all most outsiders ever knew of the site.

The installation is closely tied to Camp Ritchie: the National Park Service reports that 68 of 547 Army personnel on official rosters of the strategic interrogation program (about 12%) had trained at the Military Intelligence Training Center at Camp Ritchie. Many interrogators were recent immigrants from Nazi Europe who spoke German and knew German culture. After the war, personnel were sworn to secrecy; buildings were largely leveled, and the story remained obscure until records were declassified in the 1990s.

Dan Gross — who ran the original theritchieboys.com, a major research source for this site, and a longtime friend of many Ritchie Boys — began his Camp Ritchie work while volunteering with the National Park Service on Fort Hunt / P.O. Box 1142 records at the National Archives.

Location and wartime cover

Fort Hunt sits on the Potomac south of Alexandria. After Pearl Harbor, the War Department selected it as the East Coast domestic military intelligence center. On 15 May 1942, the Department of the Interior issued a special-use permit to the War Department for the duration of the war plus one year. At its height the site had about 87 temporary and permanent structures and was known only as P.O. Box 1142.

Programs

Strategic interrogation (MIS-Y)

While the Army held operational charge, interrogations were run by the Army’s Military Intelligence Service (MIS) and the Navy’s Office of Naval Intelligence (ONI). Supporting subsections included enemy intelligence (German counterintelligence and espionage), Army (weapons and organization), Air (Luftwaffe, rockets, strategic bombing), scientific research, and industrial economics. The Navy focused on U-boat commanders and crews.

From 1942 through July 1945, 3,451 prisoners were processed. Intelligence came from interrogation, listening devices, and stool pigeons; more than 5,000 reports had been produced by the end of August 1945. Examples cited by the NPS include confirmation that V-1 and V-2 rockets were made at Peenemünde (soon heavily bombed) and postwar questioning of figures such as Wernher von Braun’s team (Operation Paperclip, partly at Fort Strong) and General Reinhard Gehlen.

Methods emphasized non-violent, individualized interrogation—later held up as a model—rather than coercion.

Escape and evasion (MIS-X)

Even more secret than MIS-Y was the escape-and-evasion program (MIS-X), begun in February 1943 and modeled on British practice. Its nerve center was the renovated post hospital (later the site of Picnic Pavilion A). Work included silk escape maps, uniform buttons with hidden compasses, codes for “code users” whose letters home were routed to P.O. Box 1142, and care packages from fictitious relief organizations that smuggled maps, currency, radios, and other aids into German POW camps (by 1944, about 80–120 packages a day).

MIS-X supported escape planning at camps such as Stalag Luft III (the “Great Escape” of March 1944). Of 95,532 U.S. servicemen captured by Germany, 737 escaped; how many avoided capture partly because of E&E training is unknown. On 20 August 1945, the War Department ordered MIS-X records at P.O. Box 1142 destroyed.

Military intelligence research

Translators and analysts mined captured documents, newspapers, and scientific journals. The program also gathered and distributed German order of battle information used in planning for D-Day. Ritchie Boys such as Paul Fairbrook later described MIRS / P.O. Box 1142 document work (including the “Red Book” order-of-battle volumes) as a major postwar-facing assignment after Camp Ritchie.

After the war

Fort Hunt was declared surplus in November 1946; temporary wartime buildings were removed, and the property returned to the National Park Service in January 1948. The site became a park unit within the George Washington Memorial Parkway and was added to the National Register of Historic Places in 1980.

Ritchie Boys and this wiki

Soldiers and staff already linked on this site to Fort Hunt / P.O. Box 1142 work include (non-exhaustive):

• Paul Fairbrook — MIRS / order-of-battle document work
• Norman N. Graber — Dachau/Buchenwald survivor; Class 21 / IPW 407; assigned to 1142 (duties not detailed in surviving interview excerpt)
• John Werner Kluge — commanded MIRS at 1142 (Red Book / captured-document exploitation)
• Henry H. Kolm — Class 29 selectee to 1142 (after 20th Armored engineer service and Pentagon G-2 intervention)
• George L. Frenkel — interrogation officer at 1142 (Geneva-focused); later Berlin District Interrogation Center
• Erich W. Kramer (Eric) — IPW interrogator at 1142; later Fort Strong processing of von Braun / V-weapon scientists
• Arno Joseph Mayer — morale officer for high-value German prisoners (scientists/officers), not interrogator
• Dieter D. Kober — MIRS Order of Battle / “Red Book”; Pentagon OB work; Hitler Youth monograph (London)
• William W. Hess — interrogation / monitoring after Class 6
• First Class assignees noted on Secret Heroes/First Class (among others John F. Parker, Young A. Neal, Henry J. Staudigl, Robert E. Walker, Hubert J. Plumpe)

See also

• Camp Ritchie
• Dan Gross Memorial
• Secret Heroes/First Class
• Camp Ritchie Background
• Ritchie Boy Interviews (e.g. Fairbrook oral histories mentioning Fort Hunt)

Sources

• NPS Fort Hunt Oral History — Norman Graber transcript
• NPS Fort Hunt Oral History — John W. Kluge transcript
• NPS Fort Hunt Oral History — Henry Kolm transcript
• NPS Fort Hunt Oral History — George Frenkel transcript (2006–2007)
• NPS Fort Hunt Oral History — Eric Kramer transcript (12 September 2006)
• NPS Fort Hunt Oral History — Arno Mayer transcript (16 September 2008)
• NPS Fort Hunt Oral History — Dieter Kober transcript (17–18 January 2008)
• National Park Service — “POWs and Intel at Fort Hunt in World War II” (last updated 11 July 2022)
• NPS article sources include Dan Gross (personal communication to D. Canter, 4 May 2012, based on NARA II research); Steven M. Kleinman, “The History of MIS-Y” (2002); Matthew R. Laird, Fort Hunt historic resource study (NPS, 2000); Lloyd R. Shoemaker, The Escape Factory (1990); and related works cited on the NPS page.