William Cummings entered the Jesuit order in September 1925. He was ordained a Catholic priest on June 1938. In May 1944 he was appointed a U.S. Army Chaplain, and attended the Chaplain School at Harvard University from June to July 1944. He was deployed to the European Theater of Operations in October 1944, as a chaplain with the 103d Infantry Division, earning a Silver Star for the period from November 1944 until he was wounded in action in May 1945. He returned home to the Camp Pickett General Hospital (Virginia), where he remained until October. He was reverted to Army Reserve status in February 1946. Like many priests, he has an assumed name, and is buried under the name Gulielmus V. Cummings.