In 1943, Cramer enlisted in the United States Navy and served as a gunnery officer in the liberation of France during World War II. After returning to the US, he served in the United States Naval Reserve until 1946.
In 1943, Cramer enlisted in the United States Navy. With his degree, he was commissioned as a gunnery officer and fought to liberate France during World War II. After the war, he served in the United States Naval Reserve until 1946.