What cause Henry to abandon the tattered man?

A tattered soldier, wounded in his head and arm, comes up to the youth. He wants to converse about the battle. Henry can barely say anything as the man babbles on. Soon the tattered man asks him where he has been hit. The question makes Henry panic. Embarrassed, he stutters to the man; then he turns his head away and picks at his uniform. Thus, he abandons the tattered man and moves away from the tattered man to save himself from anymore questions.