 In addition the Seventh was clothed in the full uniform of the United States Army; a feature of their coats being a very high collar.On September 10, the regiment left Rhode Island and proceeded to Camp Casey outside of Washington, D.C.Here they remained for several weeks before joining the First Brigade, Second Division, Ninth Corps on October 6, encamped outside Sharpsburg, Maryland following the victory at Antietam a month earlier.