---- - **Name:** Department of Defense, United States of America - **Head Quarters:** Langley, Virginia - **President/CEO:** President of the United States - **Incorporated/Established Date:** July 26th, 1947 - **Type:** #government ## Mission The United States Department of Defense is an executive branch department of the federal government of the United States charged with coordinating and supervising all agencies and functions of the U.S. government directly related to national security and the United States Armed ## Online Presence - https://en.wikipedia.org/wiki/United_States_Department_of_Defense