And so, the Hun was, for he crashed to the ground behind the American lines. The incident did not affect Tom Raymond greatly. It was not his first killing. But when he, glanced back toward his companion, he saw that the other was shrinking back as if in horror.

"He'll get over that soon enough. All he has to do is to think of what the Huns have done--crucifying men and babies--to make his heart hard,"

thought Tom.

Whether his companion did this or not, did not disclose itself, but the fact remains that when Tom flew off to engage another Hun machine the lad back of him rose to the occasion and shot so well that Fritz veered off and flew back over his own lines, wounded and with his craft barely able to fly.

Not all the American machines fared as well as this, however. Jack was in poor luck. The first burst of bullets from the German he engaged punctured his gasoline tank, and he was obliged to coast back to his own aerodrome to get another machine, if possible. He was also hit once in the leg, the wound being painful though not dangerous. He received first aid treatment and wanted to get back into the fight, but this was not allowed, and he had to watch the battle from the ground.

The fight was fast and stubborn, and in the end the American forces won, for at a signal from the remaining red plane, which seemed to bear a charmed existence, as it did not appear to be hit, the others remaining of the Hun forces, turned tail and scooted back to safety.

But they had left a toll of five machines sent crashing to earth, four of them each containing two men. The leading French ace was killed, a severe loss to the Allied forces, and three of the American machines were damaged and their operators severely wounded, though with a chance of recovery. By American machines is meant those a.s.signed for use to Pershing's forces, though the craft used up to that time were of French or English make. The real American machines came into use a little later.

"Well, I think we can call it one to our credit," said Tom, as he rejoined Jack after the battle.

"Yes. But you had all the luck!" complained his chum. "It went against me, and the lad I took up. It--"

"Never mind; it'll be your turn next," replied Tom, consolingly.

And so the new American aviators received their baptism of fire, and, to their credit, longed for more.

More credit was really due the American forces than would be indicated by the mere citation of the losses inflicted on the German side in this first air battle. For many of the American fighters were "green," while not one of the Huns, as was learned later, but what had several Allied machines to his score. And so there was rejoicing in General Pershing's camp, even though it was mingled with sorrow at the losses inflicted.

Busy days followed, Tom and Jack were in the air much of the time. And when they were not flying they were delivering talks to new students, who were constantly arriving. They found time once to run into Paris on their day of leave, to see Bessie and Nellie, and they went on a little picnic together, which was as jolly as such an affair could be in the midst of the terrible war. Nellie had received no word of her missing brother, and Jack and Tom had no encouragement for her.

Then came more hard work at camp, and another battle of the air in which the American forces more than equaled matters, for they fairly demolished a German plane squadron, sending ten of the machines crashing to earth and the others back over the Hun lines, more or less damaged.

That was a great day. And, as a sort of reward for their work, Tom and Jack were given three days' leave. At first they thought to spend them in Paris, but, learning that neither Bessie nor her mother nor Nellie could leave their Red Cross work to join them, the two lads made other arrangements.

"Let's go back and see the fellows in the Lafayette Escadrille,"

suggested Tom.

"All right," agreed Jack.

And thither they went.

That they were welcomed need not be said. It was comparatively quiet on this sector just then, though there had, a few days before, been a great battle with victory perching on the Allied banners. The air conflicts, too, had been desperate, and many a brave man of the French, English or American fliers had met his death. But toll had been taken of the Boches--ample toll, too.

The first inquiry Tom and Jack had made on their arrival at their former aerodrome had been for news of Harry Leroy, but none had been received.

It was when Tom and Jack were about to conclude their visit to their former comrades of the air that an incident occurred which made a great change in their lives. One sunny afternoon there suddenly appeared, a mere speck in the blue, a single aeroplane.

"Some one of your men must have gone a long way over Heinie's lines,"

remarked Jack to one of the French officers.

"He is not one of our men. Either they were all back long ago or they will not come back until after the war--if ever. That is a Hun machine."

"What is he doing--challenging to single combat?" asked Tom, as the lone plane came on steadily.

"No," answered the officer, after a look through his gla.s.ses. "I think he brings some messages. We sent some to the Germans yesterday, and I think this is a return courtesy. We will wait and see."

Nearer and nearer came the German plane. Soon it was circling around the French camp. Hundreds came out to watch, for now the object of the lone aviator was apparent. He contemplated no raid. It was to drop news of captured, or dead, Allied airmen.

Then, as Tom, and the others watched, a little package was seen to fall from the hovering aeroplane. It landed on the roof of one of the hangars, bounced off and was picked up by an orderly, who presented it to the commanding officer.

Quickly and eagerly it was opened. It contained some personal belongings of Allied airmen who had been missing for the past week. Some of them, the message from the German lines said, had been killed by their falls after being shot down, and it was stated that they had been decently buried. Others were wounded and in hospitals.

"No word from Harry," said Tom, sadly, as the last of the relics from the dead and the living were gone over.

"Well, I guess we may as well give him up," added Jack. "But we can avenge him. That's all we have left, now."

"Yes," agreed Tom. "If we only--?"

A cry from some of those watching the German plane interrupted him. The two air service boys looked up. Another small object was falling. It landed with a thud, almost at the feet of Tom and Jack, and the latter picked it up.

It was an aviator's glove; and as Jack held it up a note dropped out. Quickly it was read, and the import of it was given to all in a simultaneous shout of joy from Tom and Jack.

"It's word from Harry Leroy! Word from Harry at last!"

CHAPTER X. STUNTS

Truly enough, word had come from the missing aviator, or, if not directly from him, at least from his captors. The German airmen, falling in with the chivalry which had been initiated by the French and English, and later followed by the Americans, had seen fit to inform the comrades of the captured man of his whereabouts.

"Where is he? What happened to him?" asked several, as all crowded around Tom and Jack to hear the news.

Jack, reading the note, told them. The missive was written in very good English, though in a German hand. It stated that Harry Leroy had been shot down in his plane while over the German lines, and had fallen in a lonely spot, wounded.

The wound was not serious, it was stated, and the prisoner was doing as well as could be expected, but he would remain in the hands of his captors until the end of the war. The reason his whereabouts was not mentioned before was that the Germans did not know they had one of the Allied aviators in their midst.

Leroy had not only fallen in a lonely spot, but he was made unconscious by his fall and injuries, and when he recovered he was lying near his almost demolished plane.

He managed to get out his log book and other confidential papers, and set fire to them and the plane with the gasoline that still remained in the tank. He destroyed them so they might not fall into the hands of the Germans, a fate he knew would be his own shortly.

But Harry Leroy was not doomed to instant capture. The blaze caused by his burning aeroplane attracted the attention of a peasant, who had not been deported when the enemy overran his country, for the young aviator had fallen in a spot well back of the front lines. This French peasant took Harry to his little farm and hid him in the barn. There the man, his wife, and his granddaughters, looked after the injured aviator, feeding him and binding up his hurts. It was a great risk they took, and Harry Leroy knew it as well as they. But for nearly two weeks he remained hidden, and this probably saved his life, for he got better treatment at the farmhouse than he would, as an enemy, have received in a German hospital.

But such good luck could not last. Suspicion that Americans were hidden in the Frenchman's barn began to spread through the country, and rather than bring discovery on his friends, Leroy left the barn one night.

He had a desperate hope that he might reach his own lines, as he was now pretty well recovered from his 'Injuries, but it was not to be. He was captured by a German patrol. But by his quick action Harry Leroy had removed suspicion from the farmer, which was exactly what he wished to do.

The Germans, rejoicing over their capture, took the young aviator to the nearest prison camp, and there he was put in custody, together with some unfortunate French and English. The tide of war had turned against Harry Leroy.

So it came about that, some time after he had been posted as missing and when it was surely thought that he was dead, Harry Leroy was found to be among the living, though a prisoner.

"This will be great news for his sister!" exclaimed Jack, as the note dropped by the German airman was read over and over again.

"Yes, she'll be delighted," agreed Tom. "We must hurry back and tell her."