Mission

The United States Army serves as the land-based branch of the U.S. Armed Forces. Section 3062 of Title 10, U.S. Code defines the purpose of the army as:

• 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

In 2018, the Army Strategy 2018 articulated an eight-point addendum to the Army Vision for 2028. While the Army Mission remains constant, the Army Strategy builds upon the Army's Brigade Modernization by adding focus to Corps and Division-level echelons. Modernization, reform for high-intensity conflict, and Joint multi-domain operations are added to the strategy, to be completed by 2028.

The Army's five core competencies are prompt and sustained land combat, combined arms operations (to include combined arms maneuver and wide area security, armored and mechanized operations and airborne and air assault operations), special operations, to set and sustain the theater for the joint force, and to integrate national, multinational, and joint power on land.