Frank Jack Fletcher
In September 1941, Biard (then a Lieutenant) was stationed at Pearl Harbor as a senior linguist for Station HYPO, part of American attempts to break Japanese military codes, including the key strategic code, JN-25. In February 1942, he was temporarily assigned to the as the radio intelligence officer under Admiral Frank Jack Fletcher. His translation and decryption work on JN-25 contributed substantially to Allied efforts in the Battle of the Coral Sea and the Battle of Midway. He was promoted to Lieutenant Commander on March 1, 1943.