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June 4, 2021

Water Shortage

The story about Communications Intelligence (COMINT) and World War II’s Battle of Midway is now well known. The U.S. Navy COMINT system in early 1942 had intercepted detailed information about a major impending Japanese operation against the Americans, scheduled for June. Navy cryptanalysts had solved enough of the Japanese enciphered code system, known to them as JN-25, to provide Admiral Chester Nimitz with detailed intelligence about the enemy naval forces coming against him.