The Signal Intelligence Service (SIS) was first founded in 1930.
Just before and during WW2.
To meet operational demands, recruitment shifted toward young women.
By the end of the war, approximately 7,000 of the 10,500 SIS staff were female.
These women on the home front contributed to the Allied victory by successfully breaking codes and deciphering enemy messages.
One of those code breakers was Genevieve Grotjan who was hired in 1939 as a junior cryptologist after her high score on a civil service mathematics test was discovered.
She discovered a correlation among intercepted messages in 1940 after analyzing the encryption system used by the Japanese, 97-shiki O-bun In-ji-ki, code named “Purple” by the Americans.
Because of her discovery, SIS and the US Navy were able to build a “Purple” analog machine to help decode Japanese messages.
Decoding some of these messages made way for many victories during the Pacific conflict, one of which was the Battle of Midway, a major turning point of the war.
What young, studious Genevieve Grotjan had discovered in September 1940 represented the decisive breakthrough into a highly sophisticated machine system that for 18 months had stubbornly resisted the concerted attack by some of the best cryptanalysts in the world. Its solution has been called “the greatest feat of cryptanalysis the world had yet known,” one which, “involved a unique intellectual effort of heroic proportions.”
In 1946, she was awarded the Exceptional Civilian Service Award for her wartime service.
The Purple cipher code was very complex.
Use your heroic feats of decrypting to solve this simple puzzle and enter the number in the Puzzle-Checker to receive the coordinates for the cache container.
2597 or Showa 12.
Cache can be found within 2 miles of the posted coordinates.
Please be careful when pulling in and out of small parking area near cache, as it is in a bend in the road with short sight distance.
There is room for small items and small trackables.
FTF gift is a throw-back to that era and useful for writing instruments.
Bring your own writing tool.
FTF HONORS GO TO tigercash
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