During the day Fritz had been actively engaged in "watering" the line with high-explosive shells. Not only did the advance and support trenches get it hot, but for miles behind the lines hostile shells were dropping promiscuously, on the chance of blowing up one or more of the numerous dumps and otherwise hampering the supply columns. But as night fell the "strafe" became desultory, and under cover of darkness the fatigue and foraging parties were able to set to work with a reasonable chance of getting through without being "done in".