"I suppose the Crown Prince is making up a new time-table," grinned Billy. "He seems to have a pa.s.sion for that. He ought to have been a railroad man."

"The trouble is that they always go wrong," laughed Frank. "I'll bet he's cross-eyed."

"Yet the Heinies fall for them every time," said Billy. "I suppose they figure that just by the law of chance one of them will have to be right some time."

"I thought that the drive had started the other morning, when the Germans came down like wolves on a fold," said Bart. "But it seems that things were quiet on other parts of the line, so that this must have been just a local operation."

"Local operation!" snorted Billy. "In other days it would have been counted a big battle. Why, if Waterloo were pulled off now do you know how the papers would describe it? They'd say that there was 'considerable activity on a section of the line over near Hougomont Farm yesterday, where certain units under Napoleon and Wellington came in contact. The artillery fire was fairly strong, and there were clashes between a few infantry regiments and the French were repulsed.

Apart from this there is nothing to report.'"

The boys laughed.

"Everything's topsy-turvy nowadays," said Frank. "It used to be armies that did the fighting. Now it's whole nations. But look at that sc.r.a.p going on overhead. Its a dandy."

They looked in the direction he indicated and their pulses quickened, for they themselves had once been engaged in a battle in the sky, and an aerial combat had a personal interest to them.

Far up in the sky, which just then was as clear as crystal, a duel was in progress between two planes. It was evident at a glance that both of the rival aviators were masters of their profession. They circled deftly about each other like giant falcons, jockeying for position, each trying to get the weather gauge on the other where he could rake his opponent with his machine gun without exposing himself to his enemy's fire in return.

Swooping, climbing, diving, the planes pursued their deadly purpose, while exclamations of admiration came from the lips of the fascinated onlookers as some specially daring manoeuvre promised to give the advantage first to one and then to the other of the antagonists.

"Cla.s.sy work!" exclaimed Frank.

"They're both dandies," declared Billy. "It's a toss up as to which will win."

"They're so far up that it's hard to tell which is which," said Bart, "but I've got a nickel that says the Hun will be downed."

"Great Scott," cried Frank. "One of them was. .h.i.t that time. See it swerve."

"And look at the smoke!" Billy shouted. "It's on fire! A bullet must have hit the petrol tank."

A burst of smoke and flame shot out from the doomed plane, and it began to fall, fire streaming out in its wake like the tail of a meteor.

Down it came like a plummet.

"It's coming right in our lines!" exclaimed Bart. "Scatter, fellows, or it will be right on top of us!"

The wrecked plane had fallen about two hundred feet, when a figure shot from the burning ma.s.s, whirling over and over as it descended. The aviator, knowing that his only choice lay between being burned or crushed, had chosen the less painful form of death.

The body fell some distance off, but the plane itself came down within a few rods of the boys. It was blazing so fiercely that they could not approach very close to it, but they could easily detect the marking which indicated that it was a French plane.

The Army Boys looked at each other regretfully.

"Score one for the Huns," remarked Frank. "You'd have lost your nickel, Bart."

"It's too bad," said Billy, as he straightened up and shook, his fist at the victorious plane.

But to the boys' amazement, the conqueror, instead of flying off toward his own lines, was coming down toward them in long sweeping spirals.

"Why, it looks as if he were going to land here!" exclaimed Billy in wonder.

"If he does, we'll have the satisfaction of taking him prisoner anyway," observed Bart.

"It must be that his own plane is injured and he has to descend,"

suggested Frank.

But there was no sign of injury to the descending plane and it seemed to be in perfect control. Swiftly and steadily it came down, and a cry of astonishment broke from the boys as they saw that it bore American markings.

"How's that?" exclaimed Frank. "There's been a fearful mistake somewhere. This fellow has downed a French plane thinking that it was German."

"He'll be court-martialed for that or I miss my guess," said Bart with a frown.

"It's bad enough to have the Huns after us without trying to kill our own people," growled Billy.

There was a level place nearby that made an ideal place for a landing, and the American machine came down there with scarcely a jar.

The boys rushed toward it with reproaches on their lips, but their wrath was lost in astonishment when they recognized, in the aviator who stepped forth, d.i.c.k Lever, one of the most daring of the American "aces" and a warm personal friend of theirs.

The reproaches died when they saw him, for only a little while before he had saved them from a German prison by swooping down with his machine and carrying them off from their captors. It was with mixed feelings that they greeted him, as he came gaily forward, a smile upon his handsome bronzed face. But d.i.c.k seemed to feel a certain stiffness in their welcome that was unusual.

"h.e.l.lo, fellows," he greeted. "What's the grouch?"

"No grouch at all, d.i.c.k," answered Frank. "We owe you too much for that. We're only sorry that you happened to make a mistake and down a French plane thinking it was German."

d.i.c.k's eyes twinkled.

"Come out of your trance," he chuckled. "I don't make that kind of mistakes."

For answer Frank led the way to the wrecked and partly burned plane and pointed out the markings.

But despite the evidence, d.i.c.k still seemed unabashed and his chuckle broke into a laugh.

"That's one on you fellows," he snorted. "Those markings are pure camouflage. Just another cute little German trick that went wrong.

That fellow set out to take photographs over our lines and he didn't want to be disturbed, so he painted out his own markings, and put the French in their place. If you'll come a little closer you can see the Hun marks under their coat of white."

The boys did so and, now that their attention had been called to it, they could readily see the tracings that had been almost obliterated.

"That's evidence enough," remarked d.i.c.k, "but to make a.s.surance doubly sure we'll go over to where the aviator fell and you'll see that he was a German all right."

The body had been decently covered up before the boys reached there, but the clothing and the effects found proved beyond a doubt that the aviator had been one of their foes.

"Take it all back, d.i.c.k," said Frank. "You knew what you were about.

And I'm glad that you came out of the sc.r.a.p safe and sound. But it certainly was some sc.r.a.p while it lasted."

"It sure was," replied d.i.c.k. "That fellow was as skilful and plucky as they make them. He kept my hands full, and there was one time when he came within an ace of raking me. But luck was with me. Poor fellow!

I'm sorry for him, but I'd have been still more sorry if it had been myself."

"What beats me is the way you tumbled to him," puzzled Billy. "You surely couldn't have read the German markings under their coat of paint. How did you know he was a German?"

d.i.c.k smiled.