The military budget of the United States is the largest portion of the discretionary federal budget allocated to the Department of Defense (DoD), or more broadly, the portion of the budget that goes to any military-related expenditures. The military budget pays the salaries, training, and health care of uniformed and civilian personnel, maintains arms, equipment and facilities, funds operations, and develops and buys new items. The budget funds six branches of the US military: the Army, Navy, Marine Corps, Coast Guard, Air Force, and Space Force.