If the pupil made his landings with accuracy he was passed on to the big school at Pau, where acrobatics are taught. The flight acrobat was the ace, the armies found. And no man went to battle till he could do spiral, serpentine, and hairpin turns, could manage a tail spin, and "go into a vrille"—a corkscrew fall which permitted the flier to make great haste from where he was, and yet not lose control of his machine, at the same time that he made a tricky target for a Boche machine-gun.

While all this training was going on the ranks of American aviators were filling in at the top. The celebrated Lafayette Escadrille, the American aviators who joined the French Army at the beginning of the war, was taken into the American Army in the late summer. Then all the Americans who were in the French aviation service who had arrived by way of the Foreign Legion were called home.

These were put at instructing for a time, then their several members became the veteran core of later American squadrons. This air unit was finally placed at 12 fliers and 250 men, and before Christmas there was a goodly number of them, a number not to be told till the care-free and uncensored days after the war.

By the beginning of the new year American aviation-fields were taking shape. The engineers had laid a spur of railroad to link the largest of them with the main arteries of communication, and the labor units had built the same sort of small wooden city that sprang up all over America as cantonments.

There were roomy barracks, a big hall where chapel services alternated with itinerant entertainers, a little newspaper building, plenty of office-barracks with typewriters galore and the little models on which aviators learn their preliminary lessons.

There is one training-field six miles long and a mile and a half wide, where all kinds of instruction is going on, even to acrobatics.

And there are several large training-schools just behind the fighting-lines, which have plenty of visiting Germans to practise on.

The enormity of the American air programme made it a little unwieldy at first, and it got a late start. But on the anniversary of its beginning it had unmeasured praise from official France, and even before that the French newspapers had loudly sung its praises.

The American aviator as an individual was a success from the beginning. He has unsurpassed natural equipment for an ace, and his training has been unprecedentedly thorough. And he has dedicated his spirit through and through. He has set out to make the Germans see how wise they were to be afraid.

CHAPTER X
THE SCHOOLS FOR OFFICERS