He displayed conspicuous gallantry and intrepidity. In a fierce counterattack, the Japanese closed in on his machine-gun emplacement, hurling grenades, one of which exploded under the gun, putting it out of action and wounding two of the crew. While the remaining gunners were desperately attempting to repair their weapon, another grenade landed squarely in the emplacement. Quickly realizing he could not safely throw the unexploded missile from the crowded position, Cpl. Harr unhesitatingly covered it with his body to smother the blast. His supremely courageous act, which cost him his life, saved four of his comrades and enabled them to continue their mission.