Biographical Note:
The United States Army is the land warfare service branch of the U.S. Armed Forces. It is one of the eight U.S. uniformed services, and is designated as the Army of the United States in the U.S. Constitution.

Contributor Bio:U S Department of the Army
The Department of the Army (DA) is one of the three military departments within the Department of Defense of the United States of America. Its mission is to fight and win our Nation's wars by providing prompt, sustained land dominance across the full range of military operations and spectrum of conflict in support of combatant commanders.