From July, 1944 to July, 1946 Bob served in the U.S. Army. He was a Staff Sergeant with the European-African-Middle Eastern Theater Ribbon and 3 Overseas Service Bars.

He was always known as Bob Roggerman but there is some confusion as to his full given name. On his marriage license, he is listed as Lewis Ralph Roggerman. On his military draft registration he is Ralph Lewis Roggerman and that is how he signed the form himself.