A deep murmur of joy ran through the ranks, and the men who had now been marching thirty hours, with but little rest, suddenly increased their speed.

Knowledge had brought them new strength.
They entered the forest and passed into Thoroughfare Gap, which leads through Bull Run Mountain.

The files narrowed now and stretched out in a longer line.

This was a deep gorge, pines and bushes lining the summits and crests.

The confined air here was closer and hotter than ever, but the men pressed on with undiminished speed.
Harry Kenton felt a certain awe as he rode behind Jackson, and looked up at the lofty cliffs that enclosed them.