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X-WR-CALDESC:7 December 1941: The Japanese attacked Pearl Harbor in Hawaii.
   <i>(Photo no. 80-G-K-13328\, 'Farewell to Thee.' Following Hawaiian trad
 ition\, Sailors honor men killed during the Dec. 7\, 1941\, Japanese attac
 k on Naval Air Station Kaneohe\, Oahu. The casualties had been buried on D
 ec. 8. This ceremony took place sometime during the following months\, pos
 sibly on Memorial Day\, May 31\, 1942. Official U.S. Navy photograph\, now
  in the collections of the National Archives.)</i>\n\nFrom the Center for 
 Cryptologic History's Pearl Harbor Review  - Pearl Harbor article on the N
 SA site:\n\nWriting some 15 years after the Japanese attack\, William F. F
 riedman said that the 'Battle of Pearl Harbor is still being fought but th
 e adversaries this time are all Americans.'\n\nThis statement is almost as
  true today as it was in the 1950s.\n\nOn a par with theories about the Ke
 nnedy Assassination\, the attack on Pearl Harbor continues to draw allegat
 ions of conspiracy\, treason\, and cover-up. The number of books written a
 bout the attack\, each purporting to tell the 'final truth\,' would fill a
  small library.\n\nThe following is not intended to be a comprehensive tre
 atment of the Japanese attack on Hawaii. Instead\, this article will try t
 o draw together the earlier articles in this series about COMINT in the pr
 e-war period\, and tell the general story of December 7\, 1941\, the most 
 momentous day for America in the Twentieth Century! \n\nSUMMARY: By the fa
 ll of 1941\, the COMINT services in the U.S. military -- the Signal Intell
 igence Service for the Army and OP-20-G for the Navy -- both had small but
  vigorous programs with experienced personnel to exploit Japanese communic
 ations. The Army and Navy shared the processing of diplomatic messages -- 
 decrypted from the Japanese PURPLE machine and codenamed MAGIC -- and were
  making efforts\, so far mostly unsuccessful\, against Japanese naval or m
 ilitary communications. American cryptologists\, working with their Britis
 h counterparts\, had made some recoveries in a general purpose Japanese cr
 yptosystem nicknamed JN-25\, but\, by late 1941\, several basic changes to
  the system had foiled cryptanalysis and exploitation. The U.S. Navy was f
 ollowing the movements of major Japanese fleet elements by means of traffi
 c analysis and Direction Finding from a series of sites around the Pacific
 .......Continue Reading on the NSA site via the link below.....
X-WR-RELCALID:0470d7ae83828f36a6f42c851216edd0
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DTSTART:20271107T020000
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DTSTART:20270314T020000
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UID:54cce671-8ee4-45f6-9457-7d2946a1bc98
DTSTAMP:20260425T152942Z
DESCRIPTION:7 December 1941: The Japanese attacked Pearl Harbor in Hawaii. 
  <i>(Photo no. 80-G-K-13328\, 'Farewell to Thee.' Following Hawaiian tradi
 tion\, Sailors honor men killed during the Dec. 7\, 1941\, Japanese attack
  on Naval Air Station Kaneohe\, Oahu. The casualties had been buried on De
 c. 8. This ceremony took place sometime during the following months\, poss
 ibly on Memorial Day\, May 31\, 1942. Official U.S. Navy photograph\, now 
 in the collections of the National Archives.)</i>\n\nFrom the Center for C
 ryptologic History's Pearl Harbor Review  - Pearl Harbor article on the NS
 A site:\n\nWriting some 15 years after the Japanese attack\, William F. Fr
 iedman said that the 'Battle of Pearl Harbor is still being fought but the
  adversaries this time are all Americans.'\n\nThis statement is almost as 
 true today as it was in the 1950s.\n\nOn a par with theories about the Ken
 nedy Assassination\, the attack on Pearl Harbor continues to draw allegati
 ons of conspiracy\, treason\, and cover-up. The number of books written ab
 out the attack\, each purporting to tell the 'final truth\,' would fill a 
 small library.\n\nThe following is not intended to be a comprehensive trea
 tment of the Japanese attack on Hawaii. Instead\, this article will try to
  draw together the earlier articles in this series about COMINT in the pre
 -war period\, and tell the general story of December 7\, 1941\, the most m
 omentous day for America in the Twentieth Century! \n\nSUMMARY: By the fal
 l of 1941\, the COMINT services in the U.S. military -- the Signal Intelli
 gence Service for the Army and OP-20-G for the Navy -- both had small but 
 vigorous programs with experienced personnel to exploit Japanese communica
 tions. The Army and Navy shared the processing of diplomatic messages -- d
 ecrypted from the Japanese PURPLE machine and codenamed MAGIC -- and were 
 making efforts\, so far mostly unsuccessful\, against Japanese naval or mi
 litary communications. American cryptologists\, working with their British
  counterparts\, had made some recoveries in a general purpose Japanese cry
 ptosystem nicknamed JN-25\, but\, by late 1941\, several basic changes to 
 the system had foiled cryptanalysis and exploitation. The U.S. Navy was fo
 llowing the movements of major Japanese fleet elements by means of traffic
  analysis and Direction Finding from a series of sites around the Pacific.
 ......Continue Reading on the NSA site via the link below.....
DTSTART;TZID=America/New_York:20271207T060000
DTEND;TZID=America/New_York:20271207T060001
LOCATION:
SUMMARY:Pearl Harbor Day
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