"On This Date in History" Calendar
1900: Naval cryptologist Joseph Rochefort was born.
12 May 1900: Joseph Rochefort, naval cryptologist who led Station HYPO, was born in Dayton, Ohio. Station HYPO was the U.S. Navy’s signals monitoring and cryptographic intelligence unit at Pearl Harbor, and was responsible for breaking the Japanese navy’s code before the Battle of Midway.
If you'd like to learn more about Joseph Rochefort, don't miss Elliot Carlson's book, "Joe Rochefort's War," which covers not only the military strategy and intelligence background, but also the personality and politics surrounding Rochefort and significant events he participated in. Learn more about the book via the link below.