The President of the United States of America, authorized by Act of Congress July 9, 1918, takes pride in presenting the Distinguished Service Cross (Posthumously) to Major (Infantry) William Graham Gillis, Jr. (ASN: 0-23909), United States Army, for extraordinary heroism in connection with military operations against an armed enemy while serving as Commanding Officer, 1st Battalion, 320th Infantry Regiment, 35th Infantry Division. On 15 September 1944, Major Gillis commanded the 1st Battalion, 320th Infantry, during the crossing of the Rhine-Marne Canal and the Sanon River in France. The enemy stubbornly opposed the crossing with strong forces of infantry which were dug in at close range, and by mortar and machine-gun fire from commanding positions on the hills. During the crossing, which was made by direct assault over improvised bridging constructed under intense direct enemy fire, Major Gillis was regularly present with the leading elements of his troops, moving freely among them to direct the attack. Disregarding his own safety he waded and swam across the river and canal several times under heavy enemy fire. His courageous leadership and exemplary conduct under fire so inspired his men that they were able to force the crossing successfully against heavy odds. His heroic accomplishment and zealous devotion to duty reflect the highest credit upon himself and the military forces of the United States.