and Oite respectively by the Japanese. The highest security diplomatic code, dubbed Purple by the U.S., had been broken, but American cryptanalysts had made little progress against the IJN's current Kaigun Ango Sho D (Naval Code D, called AN-1 by the U.S.; JN-25 after March 1942). In addition, there was a perennial shortage of manpower, thanks to penury on one hand and the perception of intelligence as a low-value career path on the other. Translators were over-worked, cryptanalysts were in short supply, and staffs were generally stressed. In 1942, "Not every cryptogram was decoded. Japanese traffic was too heavy for the undermanned Combat Intelligence Unit." Furthermore, there were difficulties retaining good intelligence officers and trained linguists; most did not remain on the job for the extended periods necessary to become truly professional. For career reasons, nearly all wanted to return to more standard assignments. However, concerning the manning levels, "... just prior to World War II, [the US] had some 700 people engaged in the effort and [was], in fact, obviously having some successes." Of these, 85% were tasked to decryption and 50% to translation efforts against IJN codes. The nature and degree of these successes has led to great confusion among non-specialists. Furthermore, OP-20-GY "analysts relied as much on summary reports as on the actual intercepted messages." The U.S. was also given decrypted messages by Dutch (NEI) intelligence, who like the others in the British–Dutch–U.S. agreement to share the cryptographic load, shared information with allies. However, the U.S. refused to do likewise. This was, at least in part, due to fears of compromise; sharing even between the US Navy and Army was restricted (e.g see Central Bureau). The eventual flow of intercepted and decrypted information was tightly and capriciously controlled. At times, even President Roosevelt did not receive all information from code-breaking activities. There were fears of compromise as a result of poor security after a memo dealing with Magic was found in the desk of Brigadier General Edwin M. (Pa) Watson, the President's military aide. Purple The Japanese code dubbed "Purple", which was used by the Japanese Foreign Office and only for diplomatic (but not for military) messages, was broken by Army cryptographers in 1940. A 14-part message using this code, sent from Japan to its embassy in Washington, was decoded in Washington on 6 and 7 December. The message, which made plain the Japanese intention to break