The President of the United States of America, authorized by Act of Congress July 9, 1918, takes pleasure in presenting the Silver Star (Army Award) to Captain Alvin F. Mackin (MCSN: 0-27603), United States Marine Corps, for conspicuous gallantry and intrepidity in action as a member of the Second Battalion, Seventh Marines, FIRST Marine Division (Reinforced), in action against enemy aggressor forces in Korea on 13 June 1951. On that date, the rifle company Captain Mackin commanded was ordered to seize objective EIGHT, a critical terrain feature north of Songnimchon, Korea. For two days the enemy had fanatically defended this hill despite a heavy bombardment by all available supporting arms. Patrols to the hill were twice driven back by small arms fire, automatic weapons fire, grenades and enemy mortars and artillery. The assault elements of his company moved forward, but due to extremely heavy resistance were forced to seek cover and reorganize. During this period, Captain Mackin moved forward to his assault elements, continually exposing himself to small arms and automatic weapons fire. He personally led the second and third attacks. His skillful leadership and sound tactical decisions enabled his company to secure its objective with a minimum of casualties. The gallantry and outstanding devotion to duty displayed by Captain Mackin on this occasion reflect great credit on himself and the military service.