Our mission is to provide the military forces needed to deter war and ensure our nation's security.

The United States Department of Defense (DoD, [2] USDOD, or DOD) is an executive department of the U.S. federal government charged with coordinating and supervising the six U.S. armed services: the Army, Navy, Marines, Air Force, Space Force, the Coast Guard for some purposes, and related functions and agencies.

The Department of Defense (DOD) provides the military forces needed to deter war, and to protect the security of the United States.

Dec 9, 2024 · What is the DoDIN and Why is It So Special? All U.S. military organizations rely on a complex networked infrastructure known as the Department of Defense Information Network, commonly referred to as the DoDIN, to carry out their missions.

During a press conference at the Pentagon today, Defense Secretary Pete Hegseth and Air Force Gen. Dan Caine, chairman of the Joint Chiefs of Staff, lauded the success of the U.S. Central …

The DoD CIO is the principal staff assistant and senior advisor to the Secretary of Defense and Deputy Secretary of Defense for information technology (IT) (including national security systems...

Jul 1, 2025 · Each branch of the military Service (Army, Navy, Air Force/Space Force, Marine Corps, Coast Guard) and DOD Civilians have their own COOL website, designed expressly for them. See How is COOL Organized for links and more information.

The Office of Systems Engineering and Architecture (SE&A) develops and promotes innovative engineering principles and techniques to advance DoD engineering practice.

On December 8, 2009, The Office of Management and Budget issued the Open Government Directive (M-10-06) which described the principles of transparency, participation, and collaboration as “the...

4 days ago · U.S. Department of Defense (DoD), executive division of the U.S. federal government responsible for ensuring national security and supervising U.S. military forces.