How are specific social or cultural issues explored in Chickamauga by Ambrose Bierce, and with what results? (Or, alternatively, what is the issue, how is it revealed in the story, and what is the impact?)

How are specific social or cultural issues explored in Chickamauga by Ambrose Bierce, and with what results? (Or, alternatively, what is the issue, how is it revealed in the story, and what is the impact?)