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 Sergeant Alvin P. Duncan (ASN: 42460), United States Army, for extraordinary heroism in action while serving with Company D, 16th Infantry Regiment, 1st Division, American Expeditionary Forces, near Sedan, France, 7 November 1918. Sergeant Duncan led a daylight patrol against an enemy machine-gun emplacement, which was harassing the advance of his company. Under the murderous fire from this gun, his patrol was wiped out, but he pressed on alone, capturing the machine gun and gunner. He showed coolness and bravery under heavy fire and his action materially facilitated the advance of his company.