The Department of Defense is America's largest government agency. With our military tracing its roots back to pre-Revolutionary times, the department has grown and evolved with our nation.

Apr 4, 2025 · The Department of Defense provides the military forces needed to deter war and ensure our nation's security.

The Department of Defense is America's largest government agency. Our mission is to provide the military forces needed to deter war and ensure our nation's security.

4 days ago · The Department of Defense provides the military forces needed to deter war and ensure our nation's security.

The Department of Defense provides the military forces needed to deter war and ensure our nation's security.

Check out the resources available to service members and their families, veterans, DOD civilians and the general public. Try FAQs for answers to popular topics or submit a question.

Unified Combatant Commands. The Unified Command Plan is a classified executive branch document prepared by the chairman of the Joint Chiefs of Staf that assigns missions; planning, training and ...

Office of the Secretary of Defense. The Office of the Secretary of Defense (OSD) is responsible for policy development, planning, resource management and program evaluation.

Mar 24, 2025 · Contracts. Contracts valued at $7.5 million or more are announced each business day at 5 p.m.

6 days ago · About. The Honorable Pete Hegseth is the 29th secretary of defense, sworn in on Jan. 25, 2025. A graduate of Princeton University in 2003, Hegseth was commissioned as an infantry officer in the U ...