Based on the early conversation between the youth and the loud soldier, what irony does there seem to be in the description ‘loud’ continuing to be applied to the second young soldier?

Another element of prophesy in this chapter is the developments of Wilson. "The loud soldier" is no more. Something in the battle yesterday and his reflections on it lead him to an increase in wisdom and compassion. The narrator renames him "the friend." This shows that he has been fundamentally changed in some way, so much so that he needs a new name. Henry even notices these changes to himself. Wilson no longer gets angry at slight words, is not so interested in demonstrating his prowess. He is far more concerned in helping people get along and survive, as evidenced by his stopping a fight between soldiers and taking care of Henry.