United States Army Intelligence and Security Command

Overview

The United States Army Intelligence and Security Command is the principal intelligence command of the United States Army. INSCOM conducts signals intelligence, human intelligence, counter-intelligence, measurement-and-signature intelligence, geospatial-intelligence, and cyber and information-operations missions in support of Army and joint commanders worldwide, and provides the Army's principal contributions to the National Security Agency / Central Security Service through its Service Cryptologic Component subordinate units.¹

INSCOM is headquartered at Fort Belvoir, Virginia, and is organised around a substantial set of operational subordinate brigades and groups including the 470th, 500th, 501st, 513th, and 902nd Military Intelligence Brigades; the 116th and 704th Military Intelligence Brigades (cyber); the 1st Information Operations Command (Land); and the United States Army Intelligence Center of Excellence at Fort Huachuca, Arizona.

History & Origins

INSCOM was established on 1 January 1977 by the consolidation of the United States Army Intelligence Agency, the United States Army Security Agency, and the United States Army Counter-Intelligence Records Facility into a single command reporting to the Department of the Army. The consolidation reflected the post-Vietnam Army reorganisation of intelligence functions, the recommendations of the 1975–1976 Church and Pike Committee investigations into the United States Army's domestic-surveillance programmes, and the parallel establishment of NSA's Central Security Service (1972) as the institutional channel for Service Cryptologic Component support to NSA.²

The United States Army Security Agency, INSCOM's principal predecessor for signals-intelligence purposes, had been established on 15 September 1945 by the consolidation of the wartime Signal Security Agency and the Army's signals-intelligence elements. The ASA conducted the Army's principal Cold-War signals-intelligence mission across approximately three decades, operating field stations in Europe, the Far East, and elsewhere, and supplying signals product to NSA under the Service Cryptologic Component arrangement.³

The 1975–1976 Church and Pike Committee investigations identified, among other matters, the United States Army's continental-United-States domestic-surveillance programme (CONUS Intel) of the late 1960s and early 1970s — under which Army Intelligence had collected information on US civil-rights, anti-war, and political activists — as a substantial institutional failure. The CONUS Intel record was the principal historical reason for the post-1976 narrowing of Army Intelligence's domestic mission and for the Department of the Army's institutional support for the strict separation of military intelligence from domestic political surveillance that the post-1976 governing directives have implemented.⁴

Mandate & Jurisdiction

INSCOM's authorities derive from Department of Defense Directive 5105.21 (governing service-intelligence components), Army Regulation 381-10 (US Army Intelligence Activities), the relevant Intelligence Community Directives, and Executive Order 12333. INSCOM's principal functions are:

• conduct of signals-intelligence operations as the United States Army Service Cryptologic Component to NSA / CSS;
• conduct of human-intelligence operations in support of Army and theatre commanders;
• conduct of counter-intelligence and security operations protecting Department-of-Army personnel, facilities, and information;
• conduct of measurement-and-signature intelligence and geospatial-intelligence operations;
• conduct of cyber and information-operations missions in support of US Cyber Command and Army Cyber Command.⁵

INSCOM's intelligence collection on US persons is governed by Army Regulation 381-10 and Executive Order 12333. The collection of intelligence on US persons for the purpose of monitoring lawful political activity is prohibited.

Notable Operations

Confirmed Field Station Berlin and Cold War European SIGINT (1947–1992). The United States Army Security Agency, and from 1977 INSCOM, operated a substantial network of signals-intelligence collection field stations in West Germany — most prominently Field Station Berlin at the Teufelsberg listening post in West Berlin — that provided the principal United States Army contribution to the Five Eyes signals-collection effort against Warsaw Pact forces across the Cold War. Field Station Berlin was deactivated in 1992 in conjunction with German reunification.⁶

Confirmed Operation Iraqi Freedom and the post-2003 Iraq mission. INSCOM brigades — most prominently the 513th Military Intelligence Brigade — provided the principal Army intelligence support to United States Central Command and to Multi-National Force – Iraq across the 2003–2011 period. INSCOM personnel and units were the principal Army element of the post-2007 sustained intelligence campaign against the Iraqi insurgency and the Sunni and Shia militia networks.⁷

Confirmed Counterintelligence support to Operation Enduring Freedom and post-2001 Afghanistan. INSCOM's 902nd Military Intelligence Group conducted the principal United States Army counterintelligence support to Operation Enduring Freedom and the broader Afghanistan mission, with a sustained presence on the ground from 2001 through 2021.⁸

Confirmed 704th Military Intelligence Brigade and NSA support. The 704th Military Intelligence Brigade, headquartered at Fort Meade, is the principal Army Service Cryptologic Component organisation, operating in direct support of NSA and providing Army personnel to the integrated NSA / CSS workforce.⁹

Controversies & Abuses

Confirmed CONUS Intel domestic-surveillance programme (1965–1971). Across approximately 1965–1971 the United States Army Counter-Intelligence Analysis Branch and subordinate elements maintained surveillance on US civil-rights, anti-war, and political activists, with files on tens of thousands of US citizens. The programme was disclosed by former Army intelligence officer Christopher Pyle in Washington Monthly in January 1970 and was subsequently the subject of the Senate Subcommittee on Constitutional Rights inquiry under Senator Sam Ervin (1971) and of the broader Church Committee investigations of 1975–1976. The CONUS Intel disclosures were the principal driver of the post-1971 institutional narrowing of Army Intelligence's domestic mandate.¹⁰

Confirmed Abu Ghraib prisoner-abuse case (2003–2004). The 205th Military Intelligence Brigade, then assigned to Combined Joint Task Force Seven in Iraq and operating Abu Ghraib detention facility's interrogation operations from October 2003, was the principal Army Intelligence formation associated with the prisoner-abuse activities at Abu Ghraib that were disclosed by 60 Minutes II and The New Yorker in late April and early May 2004. The subsequent Department of Defense investigations under Major General Antonio Taguba (2004) and Lieutenant General Anthony Jones / Major General George Fay (2004) found substantial intelligence-related failures of leadership, training, and supervision; multiple soldiers were court-martialed.¹¹

Confirmed Chelsea Manning disclosures (2010). Specialist Bradley E. Manning (later Chelsea Manning), an INSCOM intelligence analyst with the 2nd Brigade Combat Team, 10th Mountain Division, in Iraq, transferred approximately 750,000 classified documents to WikiLeaks across early 2010. Manning was prosecuted under the Uniform Code of Military Justice and was sentenced to thirty-five years in 2013. Covered as a separate dossier on this site: see The Manning–WikiLeaks Disclosures.¹²

Notable Figures

• Major General William E. Odom — Commanding General (1981–1985); subsequent Director of NSA.
• Lieutenant General Keith B. Alexander — Commanding General (2001–2003); subsequent Director of NSA and first Commander of US Cyber Command.
• Lieutenant General Mary A. Legere — Deputy Chief of Staff for Intelligence, US Army (2012–2016); senior INSCOM-affiliated officer of the period.
• Major General Christopher J. Wells — Commanding General (2024–present).

Oversight & Accountability

INSCOM is subject to oversight by the Senate Select Committee on Intelligence, the House Permanent Select Committee on Intelligence, the Senate and House Armed Services Committees, the Army Inspector General, the Department of Defense Inspector General, and the Intelligence Community Inspector General. As a service-intelligence component, INSCOM's intelligence functions are subject to the Intelligence Community Directives issued by the Director of National Intelligence and to Army Regulation 381-10 governing intelligence activities involving US persons.

Sources & Further Reading

1. INSCOM, "About"; INSCOM organisation.
2. United States Army Intelligence and Security Command, INSCOM at 25 (Fort Belvoir, 2002); James L. Gilbert, In the Shadow of the Sphinx: A History of Army Counterintelligence (US Army INSCOM, 2005).
3. James L. Gilbert and John P. Finnegan (eds.), U.S. Army Signals Intelligence in World War II: A Documentary History (Center of Military History, US Army, 1993); US Army Center of Military History.
4. United States Senate, Final Report of the Select Committee to Study Governmental Operations with Respect to Intelligence Activities ("Church Committee Reports"), Book II, 1976; United States Senate Subcommittee on Constitutional Rights, Federal Data Banks, Computers, and the Bill of Rights (Ervin Report), 1971.
5. Army Regulation 381-10, "U.S. Army Intelligence Activities," current edition; Department of Defense Directive 5240.01.
6. William E. Burrows, By Any Means Necessary: America's Secret Air War in the Cold War (Farrar, Straus and Giroux, 2001); NSA Cold War declassified records.
7. 513th Military Intelligence Brigade; Lieutenant General Stanley A. McChrystal, My Share of the Task: A Memoir (Portfolio, 2013).
8. 902nd Military Intelligence Group; Department of Defense, Operation Enduring Freedom: Afghanistan, official histories.
9. 704th Military Intelligence Brigade.
10. Christopher H. Pyle, "CONUS Intelligence: The Army Watches Civilian Politics," Washington Monthly, January 1970; Church Committee Report, Book II, ch. III; Federal Data Banks, Computers, and the Bill of Rights (Ervin Report), 1971.
11. Major General Antonio M. Taguba, Article 15-6 Investigation of the 800th Military Police Brigade (the "Taguba Report"), 4 March 2004; Lieutenant General Anthony R. Jones and Major General George R. Fay, Investigation of Intelligence Activities at Abu Ghraib, August 2004.
12. United States v. Manning, court-martial findings and record, 2013; covered in the Manning–WikiLeaks dossier on this site.