"This is a harder job than any you've had yet, Jack," said his commander. "But it counts for more, too. Are you sure you're not too tired to handle your car?"

"Not a bit of it, sir!" protested Jack. "I've had all the sleep I need. What the General wants to know chiefly is whether there are enough troops of the enemy between Colonel Abbey and Newville to prevent a junction between the cavalry and General Bean's brigade, isn't it?"

"Right! I can't give you any special orders. You'll have to use your own judgment, and do whatever seems best when the time comes. This is the sort of a situation that changes literally from minute to minute, and if I gave you special orders before you started they would probably hamper you more than they helped you."

"Can I have Tom Binns again, sir?"

"Certainly! I'll have Crawford tell him to report to you at the garage. Overhaul your car carefully—you don't want any little mechanical trouble to come along and spoil your work just as you are on the verge of success."

"The car's all right, sir. I went over every bit of it before I turned in. I had an idea I might be called for some sort of emergency work when every minute would count, and she's ready for any sort of a run right now."

"Good enough! That's the way to be. 'Be prepared'—that's a pretty good motto. It has certainly been proved abundantly in the last few hours."

It would take the Scouts a good three hours to come up with Colonel Abbey's regiment of cavalry, but Jack and Tom Binns, in the big grey car that moved silently, like a grey ghost, in the moonlight, were well ahead of them as the column swung out of the little town.

"Well, we're off again!" said Jack. "No telling what's going to come up before the night's over, either, Tom. We've got a roving commission, with no orders to hold us down, and I'm out to see just as much as the road will show us."

"Are you going to stick to the main road, Jack?"