The organize, train, equip, and provide combat-ready forces to conduct operations as directed by the President and Secretary of Defense.

Military departments

Explanation:

The Military Departments consists of the Army which are in charge of the land warfare, the navy which are in charge of the water warfare and the airforce which are in charge of the air spaces.

The Military Departments are involved in the organization, training, equipment , and provision of combat-ready forces to conduct operations as directed by the President and Secretary of Defense.

i think you really need to revive you answer! : d