The President of the United States of America takes pride in presenting the Silver Star (Posthumously) to Second Lieutenant Duncan R. Scott (MCSN: 0-22227), United States Marine Corps, for conspicuous gallantry and intrepidity as a Rifle Platoon Leader of Company A, First Battalion, Twenty-first Marines, THIRD Marine Division, in action against enemy Japanese forces on Guam, Mariana Islands, from 26 to 28 July 1944. When a hostile force penetrated the lines of his company on his right and threatened the flank of his company just before dawn on 26 July, Second Lieutenant Scott crawled from foxhole to foxhole in the total darkness, selecting and leading six of his men to new positions from which they successfully defended the exposed flank. During a subsequent hostile attack when his platoon was fired on and one of his scouts was wounded, he moved forward and, advanced abreast of his scouts to locate the Japanese resistance in the face of heavy fire from concealed enemy machine guns. On the night of 28 July, when a grenade was thrown into a foxhole occupied by himself and a corpsman, Second Lieutenant Scott jumped out, pulled the corpsman partially out of the hole before the grenade exploded and shot the Japanese who had thrown the missile. His courage and devotion to duty upheld the highest traditions of the United States Naval Service.