United States Army

 is a character in Red Dead Redemption.

Background
The United States Army is the branch of the United States armed forces responsible for land-based military operations. It is the largest and oldest established branch of the U.S. military, and is one of seven uniformed services. The modern Army has its roots in the Continental Army which was formed on 14 June 1775, before the establishment of the United States, to meet the demands of the American Revolutionary War. Congress created the United States Army on 14 June 1784 after the end of the war to replace the disbanded Continental Army. The Army considers itself to be descended from the Continental Army and thus dates its inception from the origins of that force.

Interactions
You first see the US Army in the Mission, "And The Truth Will Set You Free" which is where you and the US army along side the US Federals try to take down and kill Dutch Van Der Linde. The second and the last time you see them (in red dead redemption) is in the mission, "The Last Enemy That Shall Be Destroyed" which is were the US Cavalry and US Federals attack your ranch (Marston Ranch). in Beecher's Hope and try to kill you and your family.