The Invisible Enemy

"The Invisible Enemy" by Arnold Castle is a science fiction story that throws a young, confused teenager named Tom into the middle of a senseless war. Facing an unseen foe, Tom struggles to understand the conflict, pondering the purpose of violence as he navigates the chaos of battle. At only fifteen years old, his journey becomes a quest to understand not only the enemy but also himself, leading to a powerful moment of revelation about the common bonds shared by all soldiers, regardless of their side. The book highlights themes of peace, the heavy cost of violence, and the dream of a future without war, suggesting that the real enemy is the never-ending cycle of conflict that people create.