 Long, a member of Company M, distinguished himself by conspicuous gallantry and intrepidity above and beyond the call of duty in action against an armed enemy of the United Nations.When Company M, in a defensive perimeter on Hill 300, was viciously attacked by a numerically superior hostile force at approximately 0300 hours and ordered to withdraw, Sgt.Long, a forward observer for the mortar platoon, voluntarily remained at his post to provide cover by directing mortar fire on the enemy.