guarding the National Security
The duties and responsibilities of department of national defense are quite many. The mainly include ensuring public safety and protecting the country against any form of attacks among others.
* to advise the President in the carrying out of defense policy * to run the Defense Department * to advise the President in the formation of defense policy
The three executive departments in nineteenth century were department of state, department of the treasury and department of defense. All of these had a part in government.
The Department of Defense is run by the Secretary of Defense.
Department of State, Department of Treasury, and Department of war. Department of State would handle relations with other nations, the Treasury Department deal with financial matters, and the War Departments would provide for nations defense.
The Department of Defense is often referred to as The DOD.
The Department of Defense is in charge of the U.S. military.
What is now called the Department of Defense was originally named the Department of War.
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The State Department deals with diplomacy while the Department of Defense affiliated with the military.
The Department of Defense was once called the Department of War.
Secretary of Defense Dr. Robert M. Gates is the current chief of the Department of Defense.