The President of the United States of America, authorized by Act of Congress July 9, 1918, takes pleasure in presenting a Bronze Oak Leaf Cluster in lieu of a Second Award of the Silver Star to Second Lieutenant (Corps of Engineers) John F. MacAllister (ASN: 0-517515), United States Army, for gallantry in action while serving with the 121st Engineer Combat Battalion, 29th Infantry Division, in action against the enemy on the morning of 7 June 1944, in Normandy, France. Second Lieutenant MacAllister came to the rescue of twenty-five officers and enlisted men of the battalion staff who had become trapped in a trench while fighting a delaying action. Disregarding his own peril, Second Lieutenant MacAllister braved a hail of enemy machine gun fire to reach the officers and men to notify them of their predicament. He then guided them back to safety, continually exposing himself to enemy fire, and suffering a painful wound in so doing. His intrepid actions saved the group from annihilation and reflect great credit upon himself and the Military Service.