The President of the United States of America, authorized by Act of Congress, July 9, 1918, takes pleasure in presenting the Silver Star to First Lieutenant (Coast Artillery Corps) John O. Allyn (ASN: 0-2200300), United States Army, for conspicuous gallantry and intrepidity in action against the enemy while serving with Battery C, 15th Anti-Aircraft Artillery (Automatic Weapons) Battalion (Self Propelled), 7th Infantry Division, near Sendong-Ni, Korea, on 26 November 1950. On this date, Lieutenant Allyn was a member of a reconnaissance patrol which was reconnoitering north toward the Yalu River. This patrol encountered intense enemy fire from commanding ground to the front, rear and flanks. This intense enemy fire pinned down the forces, preventing movement in any direction and necessitated additional fire power being brought to bear upon the enemy-occupied terrain. Lieutenant Allyn, commanding three sections of anti-aircraft artillery automatic weapons tracked vehicles, voluntarily and without regard to his personal safety, abandoned his position and cover and moved down the column of vehicles. Maneuvering the weapons into firing positions, Lieutenant Allyn provided a covering fire, allowing the reconnaissance patrol to withdraw. His gallant action and exemplary leadership reflect great credit on himself and the military service.