"Brother Against Brother; or, War on the Border" is a fascinating historical prose book written by Oliver Optic. In this fascinating novel, the author tells about the difficult and tense times of the American Civil War, when brothers become enemies due to conflicting views and beliefs. The tense relationship between the Northern and Southern states is dramatically reflected in the story of two brothers who find themselves on opposite fronts of the conflict. This book not only tells about the important events of that time, but also emphasizes the importance of family ties and loyalty to principles in the most difficult life circumstances. "Brother Against Brother; or, War on the Border" is an exciting novel that is sure to appeal to fans of history and adventure.