Spartans in Darkness: American SIGINT and the Indochina War, 1945-1975
Robert J. Hanyok
Center for Cryptologic History
National Security Agency
2002
Note: Additional declassified material from this report was released in May 2008 (see link below)
Front Matter
Prelude: Indochina Before 1950
Chapter 1 - Le Grand Nombre Des Rues Sans Joie: [Deleted] and the Franco-Vietnamese War, 1950-1954
Chapter 2 - The Struggle for Heaven's Mandate: SIGINT and the Internal Crisis in South Vietnam, [Deleted] 1962
Chapter 3 - "To Die in the South": SIGINT, the Ho Chi Minh Trail, and the Infiltration Problem, [Deleted] 1968
Chapter 4 - The Burden's First Fanfare: American SIGINT Arrives in the Republic of Vietnam, 1961-1964
Chapter 5 - Skunks, Bogies, Silent Hounds, and the Flying Fish: The Gulf of Tonkin Mystery, 2-4 August 1964 (alternate version at the National Security Archive)
Chapter 6 - Xerxes' Arrows: SIGINT Support to the Air War, 1964-1972
Chapter 7 - A Springtime of Trumpets: SIGINT and the Tet Offensive
Chapter 8 - In Our Own Image: NSA, Vietnamization, and the Expansion of South Vietnamese SIGINT, 1969-1973
Chapter 9 - The Last Ramparts of Our Conceits: The DGTS, American SIGINT, and the Fall of South Vietnam, 1973-1975
The Still, Small Voice: Aftermath and Conclusions, 1975 and Beyond
Glossary, Sources, Index
Full Document in a Single File (35 MB) (as released December 2007)
Additional Declassified Material (93 pages, 8 MB) (as released May 2008)
Sources and Resources
NSA Releases History of American SIGINT and the Vietnam War, Secrecy News, January 7, 2008
Declassified Study Puts Vietnam Events in New Light by Peter Grier, Christian Science Monitor, January 9, 2008
Thanks to Michael Ravnitzky
Tonkin Gulf Intelligence "Skewed" According to Official History and Intercepts, National Security Archive Electronic Briefing Book, 1 December 2005
Gulf of Tonkin Documents from the National Security Agency
http://www.fas.org/irp/nsa/spartans/
Maintained by Steven Aftergood
https://fas.org/irp/nsa/spartans/