Read it through once

The youth went along with slipping uncertain feet. He kept watchful eyes rearward. A scowl of mortification and rage was upon his face. He had thought of a fine revenge upon the officer who had referred to him and his fellows as mule drivers. But he saw that it could not come to pass. His dreams had collapsed when the mule drivers, dwindling rapidly, had wavered and hesitated on the little clearing, and then had recoiled. And now the retreat of the mule drivers was a march of shame to him.