John R. Redman

John "Jack" Roland Redman (January 31, 1898, – May 29, 1970) was an admiral in the United States Navy. A naval communications officer, he played key roles in signals intelligence during World War II in Washington, D.C., and on the staff of Admiral Chester W. Nimitz.

Biography
A native of Reno, Nevada, he graduated from the United States Naval Academy in June 1918 with the class of 1919. He was a member of the United States Olympic Team, participating as a wrestler in the 1920 games. He was the brother of Joseph Redman, also a naval communications officer. He reached the active rank of Rear Admiral in March 1944. In February 1942, with the reorganization of U.S. Navy signals intelligence, he was put in charge of OP-20-G, the section of naval communications responsible for cryptanalysis.

John Redman served as the Communications Officer on the staff of the Commander-in-Chief, United States Pacific Fleet, Admiral Chester Nimitz, from October 1942 to March 1945. Under his tenure there were some significant advances in breaking the Japanese Navy codes in OP-20-G, although his management style was later criticised. Redman rejected Captain Joseph Rochefort's accurate analysis of the intercepted Japanese messages that ultimately led to the successful Battle of Midway, and he subsequently played a role in Rochefort's ejection from cryptanalysis in the months that followed. His organisation's intentional withholding of intercepts and tips with British, Indian and New Zealand allies, who were also working on the decryption of other Japanese codebooks, was considered to have collectively held them all back. Information was only shared between organizations after the intervention of his brother Admiral Joe Redman in September 1943.

On May 2, 1945, he assumed command of the battleship USS Massachusetts (BB-59), which he held through the end of the war. From August 1949 to September 1951, he was the Director of Naval Communications in the Office of the Chief of Naval Operations, United States Navy. Subsequently he served as Director of Communications-Electronics for the Joint Chiefs of Staff in Washington, D.C. His final tour was as Commandant, Twelfth Naval District, from 1954 to 1957. He retired from the Navy on October 1, 1957, with the rank of Vice Admiral. He is buried in Arlington National Cemetery.