Distingushed Service Cross citation:

The President of the United States takes pleasure in presenting the Distinguished Service Cross to William C. Riggs (34499006), Private First Class, U.S. Army, for extraordinary heroism in connection with military operations against an armed enemy while serving with the 116th Infantry Regiment, 29th Infantry Division, in action against enemy forces on 6 June 1944, at Normandy, France. When the landing craft on which Private First Class Riggs was coming ashore was struck by enemy shell fire, it began to sink in the rough sea. With complete disregard for his own safety and despite the intense enemy small arms and artillery fire, Private First Class Riggs plunged into the turbulent sea and swam about 500 yards to another landing craft and directed it to the sinking craft. This act permitted the men to reach the beach and engage in the fire fight against the enemy. The courage, initiative and heroism displayed by Private First Class Riggs exemplify the highest traditions of the military forces of the United States and reflect great credit upon himself, the 29th Infantry Division, and the United States Army.

Headquarters, First U.S. Army, General Orders No. 29 (June 29, 1944)