It was the first time that these young novices in the art of war had seen blood flowing from American veins from a wound inflicted by a German, and it brought home to them that they were really in the war and might at any instant, like their luckless comrade, come to hand grips with death.

"That sure was a close call," remarked Frank, after Fred, having been made as comfortable as possible, had been carried off by the ambulance to the field hospital. "It might have blown us all to bits."

"That roof may be all right to keep out rain," said Billy, "but it wasn't built for bombs."

"It must have been a glancing blow," commented Tom. "If it had come plump through our name would have been Dennis. It must have spent most of its force on the ridge pole and slid off to the ground."

"Very considerate of it," said Bart, dryly.

"There may be more where that came from," suggested Billy. "There may be a whole squadron of Hun flyers up there in the sky."

"I guess it will be healthier to stay outside for a while," said Tom. "We can see the bombs coming and dodge them. It will be a new kind of outdoor sport."

"It's a new game all right," Bart flung over his shoulder as they made their way outside. "And a game where the stakes are high. You pay dearly if you lose."

They all reached the open, where they found that the entire camp had been aroused by the nocturnal raid. They quickly learned from their excited comrades that other billets had been targets for the marauders and that several soldiers had been severely injured, while one was killed.

Searchlights were sweeping the sky in the attempt to locate the hostile planes. Anti-aircraft guns were popping, and the French escadrille had already mounted to give battle.