Brigadier Sir Edgar Trevor Williams was a British historian and army military intelligence officer who played a significant role in the Second Battle of El Alamein in the Second World War. He was one of the few officers who was privy to the Ultra secret, and he served on the staff of Field Marshal Sir Bernard Montgomery as his intelligence officer for the rest of the war.
- Occupation
- military personnel
- Citizenship
- United Kingdom
- Born
- November 20, 1912
- Died
- June 26, 1995
