Pfc. Arthur J. Jackson of the 7th Regiment, 1st Marine Division, brought his aggressive spirit into play on Peleliu on Sept. 18, 1944, when Japanese defenses drove his platoon to ground. He sprinted 100 yards through kunai grass and gunfire to the main pillbox, which he neutralized with his Browning automatic rifle, phosphorus grenades and explosive charges, killing 35 Japanese. He went on to destroy a dozen more pillboxes.