The President of the United States of America, authorized by Act of Congress, July 9, 1918, takes pleasure in presenting the Distinguished Service Cross to Second Lieutenant (Infantry) Archibald Gerard Robertson, United States Army, for extraordinary heroism in action while serving with 9th Infantry Regiment, 2d Division, American Expeditionary Forces, near Thiaucourt, France, 12 September 1918. Although wounded by shell fire early in the attack, Lieutenant Robertson refused to go to the rear, but continued to lead his platoon to the objective, where, under heavy machine-gun fire, he prepared his position for the enemy counter-attack and held it throughout the night, remaining with his platoon until it was relieved the following day.