Station HYPO

Celebrating the Past, Present and Future of Navy Cryptology


April 2019

How Radio Intelligence Supported the Doolittle Raid

Known as the Doolittle Raid, on April 18, 1942, the United Stations successfully attacked the Japanese capital Tokyo and other places on the island of Honshu during World War II. The following is a report how Radio Intelligence supported this operation:

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Shootdown Account of Japanese Admiral Isoroku Yamamoto

The following is a memo from CAPT Wenger dated May 23, 1945 concerning the shootdown of Japanese Admiral Yamamoto:

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Remembering CPL Stephen Lee Traughber, KIA Vietnam

CPL Stephen Lee Traughber
April 17, 1946 – September 10, 1967

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Remembering the Crew of EC-121M (PR 21), April, 15, 1969

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Remembering Shootdown of EC-121M (PR 21), April, 15, 1969 – 31 Crew members KIA – 50 Years Ago Today

On April 15, 1969 a U.S. Navy VQ-1 EC-121M (callsign, “Deep Sea 129”) flew a routine Beggar Shadow reconnaissance mission over the Sea of Japan.  At roughly 1347 local time, while approximately 90 NM off the North Korean coast, the aircraft was shot down by two North Korean MiG-21 fighters.  All 31 crewmen were killed.

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Remembering BGen Bankson Holcomb, USMC – Code Breaker

Brigadier General Bankson T. Holcomb, USMC
April 14 1908 – October 5, 2000

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