But the cunning boches were destined to discover something, too, and to Phil was due the credit for this rather startling enlightenment of the enemy.

“Tim,” he called out to his friend, “I believe that is nothing but a machine-gun barrage intended to throw us off our guard. They’re planning a surprise attack.”

A “machine-gun barrage” was a new one to Tim, but he listened respectfully for further explanation.

“We can expect them to come over any minute,” Phil continued rapidly. “I’ve got an idea of how they’re going to do it. By the way, I’m going to make a dive over to Lieutenant Stone and tell him what I’ve got in mind. He’s only a few jumps away. He’ll probably reprimand me, if he doesn’t report me to headquarters, but the suspicion I’ve got seems to me so important that I’ll risk any punishment this side of the firing squad.”

The thunder of the cannonade and the sharper rattle of the machine guns were so intense that Phil found it necessary to scream his message to his next-trench neighbor to insure being heard.

“Well, if it’s so very important, don’t stop to tell me about it, but hurry up and get it where it will do most good,” Tim yelled back. “They won’t take me by surprise.”

A moment later Phil was dashing over the underbrush and among the trees in momentary danger of butting his head against a very solid and substantial interference or of sprawling violently on the ground. But he had surveyed the vicinity carefully before the shadows of evening thickened in the woods and knew pretty accurately where the lieutenant had dug in. He had to move just as carefully also as if he were stealing along an enemy line of trenches, for some of the American soldiers were likely to discover him and shoot him as a spy.

He succeeded in making his way within a few feet of the lieutenant’s trench and, crouching low, began to signal to him by calling his name in graduated rising tones. Presently the officer replied and Phil informed him who he was.

In a few words the sergeant communicated his self-imposed message to his superior officer.

“That is probably the best suggestion that has come from any source on this front since the American Marines were stationed here,” remarked Lieutenant Stone. “Now, you get back to your post as fast as ever you can, or I’ll order you sent back behind the lines under guard.”