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"On This Date in Cryptologic History" Calendar

Learn about a wide variety of historical events related to cryptology, computers, math, cybersecurity, Intelligence, and more.

March 2028

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S M T W T F S
27 28 Feb 29 Mar 1 2 3 4
1917: Zimmermann Telegram released to U.S. press.
1971: Cryptologic Pioneer Colonel Parker Hitt.
1832: Death of Jean-François Champollion.
1918: German ADFGVX cipher first used.
1971: Army RU-8 shot down, Vietnam.
1930: First hire at SIS - Annie Louise Newkirk
1975: STONEHOUSE site officially closed.
1951: Shelby Patterson became chief of the AFSA school.
1971: Loss of Army UH-1 & its crew.
5 6 7 8 9 10 11
1942: Station HYPO began reading Japanese system JN-25.
1924: William Friedman testifies re: Teapot Dome scandal.
1973: 509th Radio Research Group was resubordinated.
1953: "Direct" SIGINT support to tactical air control center began on Cho Do Island.
1967: USAF EC-47 loss in Vietnam.
1876: First successful voice transmission over Bell's telephone.
1935: Navy cryptologic organization redesignated OP-20-G as Communications Security Group.
1946: BRUSA Communications Intelligence Agreement
1969: Death of Ralph J. Canine, first DIRNSA.
1918: Radio Intelligence Service, Mexican border, was established.
1942: Evacuation of Station CAST.
1954: USAFSS started Airborne Reconnaissance Program
12 13 14 15 16 17 18
1951: AFSA Training Branch Established
1951: Seoul, South Korea, recaptured by UN forces.
1946: CREAM replaced ULTRA.
1981: USAF RC-135 lost, Shemya.
19 20 21 22 23 24 25
1974: Horst Feistel received a patent for "Block Cipher Cryptographic System."
1938: SIS started receiving messages from Purple.
1962: ASA flew first airborne radio direction finding mission in Vietnam.
1999: NATO began Operation ALLIED FORCE in Kosovo.
2003: Operation Iraqi Freedom began.
26 27 28 29 30 Mar 31 Apr 1
1999: Lt Gen Michael Hayden, USAF, became DIRNSA.
1994: Griffiss Air Force Base finds malware
Vietnam Veterans Day
1938: Chief Signal Officer Mauborgne permitted to perform intercept and cryptologic services for peacetime training.
1973: Last U.S. troops left Vietnam.
Wednesday, March 1, 2028
Thursday, March 2, 2028
Saturday, March 4, 2028
Sunday, March 5, 2028
Monday, March 6, 2028
Tuesday, March 7, 2028
Wednesday, March 8, 2028
Thursday, March 9, 2028
Friday, March 10, 2028
Saturday, March 11, 2028
Sunday, March 12, 2028
Tuesday, March 14, 2028
Wednesday, March 15, 2028
Sunday, March 19, 2028
Monday, March 20, 2028
Wednesday, March 22, 2028
Friday, March 24, 2028
Sunday, March 26, 2028
Tuesday, March 28, 2028
Wednesday, March 29, 2028
Thursday, March 30, 2028

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