Jack grinned as he answered it. For a moment a look of suspicious alertness showed on the face of the Blue Scout. He whirled around to face the sound behind him, and in the moment that his back was turned Jack sprang on him.

The Blue Scout put up a fine struggle, but he was helpless against the combined attack of Jack Danby and Tom Binns, who sprang to his comrade's aid as soon as he saw what Jack had done.

"Two to one isn't fair," gasped Jack as he sat on his prisoner's chest, "but we had to do it. This is war, you see, and they say all's fair in love and war. Who are you?"

"Canfield, Tiger Patrol, Twenty-first Troop, Hampton's Scouts," said the prisoner. "Detailed for Scout service with the Blue army. You got me fair and square. We caught one of your fellows near Mardean, we heard, soon after the war began. Sorry—but it's all in the game.

"How on earth did you get to me so quietly? I was watching you in the road by the bridge, and I thought you'd gone off in your car. You certainly fooled me to the queen's taste."

"Fortune of war," said Jack. "The car gave us a big advantage. You're not to blame a bit. I guess you'll be exchanged pretty soon, too. We'll give you for Warner, you see. He's the one of our Troop who was caught. And a fair exchange isn't any robbery."

"Have we got to tie him up?" asked Tom Binns.

"Not if he'll give his parole not to escape or accept a rescue," said Jack. "How about that, Canfield? Will you give me your word of honor? I'm Jack Danby, Assistant Patrol Leader of the Crow Patrol of Durland's Troop, and ranking as a corporal for the maneuvers in the Red army."

"I'll give you my parole all right," said Canfield. He saluted stiffly. "Glad to meet you, Corporal Danby. Sorry the tables aren't turned, though. We've got a special dinner for our prisoners to-night—but we haven't caught many prisoners yet, worse luck!"

"All right! See if the flags are just the same, Tom."