During World War II while serving as Commanding Officer of Bombing Squadron 16 (VB-16), on the U.S.S. Lexington, he received the Navy Cross for actions against the Japanese Navy in the Battle of the Philippine Sea. He was also awarded the Legion of Merit twice and the Distinguished Flying Cross four times. His service continued through the Korea and Vietnam War.
During Service in post-war Japan, he became concerned at the effects of nuclear war on the inhabitants of Nagasaki and Hiroshima and became an opponent of nuclear weapons, becoming more active in retirement.
- "Ralph Weymouth". Military Times. Accessed 18 September 2017
- Susan Dunne, Combat Pilot Turns Pacifist Hartford Courant August 31, 2006.
- Pamela Alma Weymouth, "A Vice Admiral and WWII Hero Condemns Nuclear Weapons 70 Years After Nagasaki and Hiroshima". Truthdig, 8 August 2015. Accessed 18 September 2017
- Gulf Coast Business review: "No Rock Star-chitect" by Carl Cronan August 27, 2010