History of U.S. Army Signal Intelligence (SIGINT) Activity and Organizations

TABLE OF CONTENTS:


  1. Putting the "SIG" in SIGINT: The dawn of electronic communications

    2. 1800s - Civil War and Spanish American War

  2. The Early 1900s (Prior to U.S. involvement in World War I)

    3. 1900-1916

  3. World War I: SIGINT in its infancy

    4. 1917-1919

  4. Between the World Wars: Demobilization and a new SIGINT service

    5. 1920-1941

  5. World War II: The importance of SIGINT fully recognized

    6. 1941-1944

  6. Between World War II and the Korea War - ASA Begins

    7. 1945-1950

  7. The Korean War: Intelligence gets off to a rough start

    8. 1950-1955

  8. The Cold War Years; ASA meets the challenge (then becomes INSCOM)

    9. 1956-1988

  9. Intelligence after the Cold War