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Station HYPO

Celebrating the Past, Present and Future of Navy Cryptology

Corregidor Remembered By RADM Ralph E. Cook (Part 5 of 5)

Last “Director Naval Security Group” and first “Commander, Naval Security Group”
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Last Two Groups of COMINT Personnel to Evacuate From Corregidor (Part 4 of 5)

On March 5 1942, COMINCH sent a priority message to COMSIXTEEN (052220Z) the following:
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The First Attack: Pearl Harbor, February 7, 1932

Did the Imperial Japanese Navy use a mock raid on Pearl Harbor that was conducted on February 7, 1932 as a blue print for their December 7, 1941 attack?
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COMINT Personnel Evacuated from Corregidor – First Group (Part 3 of 5)

During the night of February 4, 1942, the submarine USS SEADRAGON (SS 194)  made its way into Manila Bay and to the dock at Corregidor, where the first team consisting of four officers, LCDRs S.A Carlson, G.M. Richardson, LT R.J. Fabian (1) and ENS R.W. Lewis and 13 men embarked.
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Corregidor Established (Part 2 of 5)

The move of Station “C” to Corregidor represented the conclusion of several years of plans, negotiations, and construction.
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The Beginning – From Olongapo to Corregidor (Part 1 of 5)

By the mid-1920s, several enterprising radiomen on Asiatic duty assignments on the USS ISABEL (PY-10), USS PITTSBURGH (CA-4), and the men in the 4th Marine Headquarters at Shanghai, China, had self-trained themselves to intercept radio traffic (kata kana) that was transmitted on Japanese Navy radio circuits.
Continue reading “The Beginning – From Olongapo to Corregidor (Part 1 of 5)”

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