In "Good Men" by Arturo Pérez-Reverte, the narrative explores the concepts of duty and loyalty, suggesting that true commitment may require sacrificing one's life if needed. This notion emphasizes the importance of honor and the sacrifices people are willing to make for their responsibilities. It presents a deep reflection on what it means to serve a cause or protect one's values, even in the face of severe consequences.

The book also delves into the misconceptions surrounding kings and governments. It highlights how individuals can be misled about the true nature of authority and power, revealing the complexities and often darker realities behind leadership. Through these themes, Pérez-Reverte critiques the romanticized views of nobility and governance, urging readers to question the ideals they may hold about those in power.