From his hiding spot, Henry hears cheering. The Union soldiers have somehow held the line without him.
Henry tells himself that he was the enlightened one, and that those who stayed and fought were fools. (We think this is called "rationalization.")
Henry throws a rock at a squirrel and watches it scamper away. "See," he thinks. "Even animals are smart enough to run from what threatens them. It’s the natural way." (I don’t think this quote is in the novel either) (And this would be "extreme rationalization.")
Henry walks along trying to make himself feel better, which officially fails when he runs into a dead man.
The dead man (another Union soldier) and the living man exchange a "long look."
Henry watches as ants crawl "greedily" up the dead man’s face and into his eyes.