He made up his mind that he would curl himself up in some thicket and snatch a few hours of sleep.  At the first glimmer of dawn he would resume his journey.  Then he could see, no doubt, the American lines, from which he knew he could not be very far away.  The big guns, too, that had now settled down to their nightly muttering, would be in full cry at dawn, and sound as well as sight would help him.