Marines from Task Force "Mars" Burma engage the Japanese with rifle and machine gun fire. On the rifle of soldier closest to the viewer there is the inscription "HELL." Note the plenty of brass and the rifle grenades in front of the position.
In the days before radio you had to pull a cable all the way to the very front line so that field telephone link could be established. This was a dangerous job as the men with the mission needed to pull way ahead of the main body of the attack as far as the cable allowed -- and then hunker down and wait.