US Army Mission: The United States Army serves as the land-based branch of the U.S. military. The purpose of the Army:

• preserving the peace and security, and providing for the defense, of the United States, the Commonwealths and possessions, and any areas occupied by the United States
• supporting the national policies
• implementing the national objectives
• overcoming any nations responsible for aggressive acts that imperil the peace and security of the United States