The main purpose of this legislative proposal is to change the name of the Department of Defense to the "Department of War." The bill aims to reflect a stronger stance on military readiness and to emphasize the United States' willingness to engage in conflict if necessary. It is titled the "Peace Through Strength Act of 2025," suggesting that a robust military presence can lead to peace. Key provisions of the bill include the official renaming of the Department of Defense and the Secretary of Defense to the Department of War and Secretary of War, respectively.