They were back just in time to see a patrol go up, and Tom hurried Jack out to watch. "We've got another Squadron's Major here, staying to dinner to-night, and the patrol is taking off in a fancy formation that's our own special patent. It's worth watching. Come along." It was worth watching, although Jack, perhaps, was not sufficiently educated in air work to appreciate it properly. The Flight was drawn up in line facing into the wind, and, after a preliminary run up of their engines, a signal was given, six pairs of chocks jerked simultaneously clear of the wheels, and the six machines began to taxi forward over the ground, still keeping in line. Their speed increased until they were racing with tails up, and then, suddenly, the whole six lifted together and took the air, keeping their straight line and climbing steadily. The right-hand machine swept round to the right, and one after another the rest followed him, each banking steeply and, as it seemed from the ground, heeling over until their wings stood straight up and down. As they straightened they opened out and dropped into their places, and the Flight swept circling round above the 'drome in correct and exactly-spaced formation. "Pretty good show," said Tom critically. "You wouldn't understand rightly, Jack, but it's a fancy stunt we've never heard of another squadron being able to do. Sheer swank, of course, I'll admit, but rather sport." Later, Jack was able to appreciate better what the "stunt" was worth from the admiring and amazed comments of the much-impressed visiting Major. Tea followed, and after it the pilots drifted off to such occupations or amusements as they desired. Some lounged in the ante-room, with the gramophone singing, whistling, and band playing; others went off to the hangars to see to something being done to their machines, engines, or guns; others vanished into their huts, and, reappearing stripped, began strenuous work on a punching-ball or disappeared over the surrounding fields on a cross-country run. The brothers wandered round, and finished an idle hour with a brisk turn at the punching-ball. "Gets a good sweat up," explained Tom, "and helps keep you in condition. That's the curse of this job--not getting any exercise unless you do something of this sort." "Curse of it!" said Jack enviously. "Blest if I see much of a curse of any sort about it. It's amazing to think anybody can be in the middle of a big push in this war and be able to have such a ripping fine time of it." Tom laughed. "Our C.O. always swears this is the only end of the old war where a man is able to live like a gentleman and fight like a gentleman," he said. "And I don't know he isn't right." "It's the only side I've seen where you can," agreed Jack. "You certainly live like gentlemen, anyhow."