Secretary of Defense William Perry and Deputy Secretary of Defense John Deutch would like to welcome you to DefenseLINK, the World-Wide Web Information Service from the Department of Defense.
The Department of Defense is responsible for providing the military forces needed to deter war and protect the security of our country. The department's headquarters is at the Pentagon.
Under the President, who is also Commander in Chief, the Secretary of Defense exercises the authority, direction, and control over the department, which includes: