What were the duties of the Dept of Defense?

The Department of Defense (DoD) is responsible for coordinating and supervising all agencies and functions related to national security and the armed forces. Its primary duties include overseeing military operations, ensuring the defense of the United States, managing defense budgets, and developing military policy. The DoD also engages in international defense relationships and provides support for humanitarian missions and disaster relief as needed. Additionally, it is tasked with the recruitment, training, and readiness of military personnel.