Department of Defense (DOD)

Maggie & Nicole

Main Purpose

The Department of Defense works with the Joint Chiefs of Staff, the leaders of the Army, Navy, Marines, and Air Force. They manage the armed forces of the United States.

Mission Statement

The mission of the Department of Defense is to provide the military forces needed to deter war and to protect the security of our country. The department's headquarters is at the Pentagon.


The Army, Navy, and Marine Corps were established in 1775, in concurrence with the American Revolution. The War Department was established in 1789, and was the precursor to what is now the Department of Defense.

One year later, in 1790, the Coast Guard (part of Homeland Security in peace time) was established. This was followed by the founding of the Department of the Navy in 1798.

The decision to unify the different services under one Department led to the creation of the National Military Establishment in 1947. This establishment would replace the War Department, which converted to the Department of the Army. That same year, the U.S. Air Force was established followed by the founding of the Department of the Air Force.

Finally, the three military branches, Army, Navy, and Air Force, were placed under the direct control of the new Secretary of Defense, confirmed by Senate. In 1949, an amendment to the National Security Act further consolidated the national defense structure by withdrawing cabinet-level status from the three Service secretaries. The National Military Establishment was then renamed the Department of Defense.

Head of the Department

The head of the Department of Defense is the Secretary of Defense: Chuck Hagel.

Hagel's job is the principal defense policy advisor to the President. Under the direction of the President, the Secretary exercises authority, direction, and control over the Department of Defense. Hagel is qualified to lead this department because he served in the armed forces, was personally appointed to serve as Deputy Administrator of the Veterans Administration by President Ronald Reagan. Hagel was elected in the US Senate in 1996. Following his career in the Senate, Hagel worked closely with President Obama as Co-Chairman of the President's Intelligence Advisory Board. HAgel also serves as a member of the Secretary of Defense Policy Board.



Provides $526.6 billion in discretionary funding for the base budget of the Department of Defense, a decrease of $3.9 billion, or 0.7 percent, below the 2012 enacted level. This level provides sufficient resources to carry out our national defense strategy.

Current Issues

Some issue they are dealing with is the ISIL Crisis. As of November 27, 2014, the total cost of the operation is related to ISIL Since kinetic connections started on August 8, 2014 is about $910 billion and the daily cost is $8.1 billion.

Another thing they are dealing with is opening up relations with Cuba. THe changes would be travel changes would be easier. Also less remittances would be set.

United States Department of Defense : Testing anti-ram vehicle barrier