Ned, Bob, Jerry, and some of the other soldiers scrambled to their feet. They had been on the point of answering roll call when the explosion 79 came, and now that the danger was over, at least for the time being, they had a chance to see what had caused it.

The aeroplane from which the bomb had been dropped was not now in sight, but this is what had happened. One of the German machines passing over the front line, as they often did, had escaped the Allied craft, and had also managed to pass through the firing of the anti-aircraft guns. Whether the machine had gone some distance back, hoping to drop bombs on an ammunition dump, or whether it came over merely to take a pot shot at the American trenches, was never known.

But the aviator had dropped a large explosive bomb, which, luckily for the Motor Boys and their comrades, had fallen into an open space, though not far from one of the camouflaged stations where the soldiers were quartered before being taken up to the front-line trenches. The explosion had blown a big hole in the ground and damaged some food stores, but that was all, except that when the Americans were about to answer roll call they were knocked down by the concussion, and some, like Ned, were scratched and cut by flying dirt and stones, or perhaps by fragments of the bursting bomb.

“See, no one is hurt,” went on the officer, as if to reassure those who were soon to take their 80 places in the front-line trenches. “Good luck was with you that time.”

“I hope it keeps up,” murmured Bob. “It’s a mean trick to shoot a man before he has his breakfast,” and then he wondered why the others laughed.

They all looked curiously, and it may be said, thankfully, at the big hole made by the bomb. As the officer had said, only good luck had prevented some of the boys from filling that hole.

After this Jerry was silent and thoughtful.

“Well, what’s next?” asked Ned, after an examination had shown that his wounds were merely scratches, for which he refused to go to the hospital, or even a dressing station.

“Breakfast, I hope,” said Bob, and this it proved to be.

The excitement caused by the dropping of the bomb soon died away, though Ned, Bob, Jerry, and some of the other soldiers who had not yet been under hostile fire, felt their nerves a bit unsteady for some time.