The period between the US Revolutionary War in the 1700s and the US Civil War in the 1860s saw a huge shift away from the influence of European militaries in both uniforms and equipment.
Britain - 1700s - Enlisted
Britain - 1700s - Enlisted (King's Regiment of Foot)
Britain - 1700s - Officer (King's Regiment of Foot)
Continental Army - Generic Soldier (Revolutionary War)
Continental Army - Generic Soldier w/ webbing (Revolutionary War)
US Civil War - Enlisted - Undress (1861-1865)
US Civil War - Enlisted - Generic (1861-1865)
US Civil War - Confederate - Generic Soldier - Basic
US Civil War - Confederate - Generic Soldier - Battle Order
US Civil War - Confederate - North Carolina ('Butternut' Uniform)
US Civil War - Confederate - Major of Artillery
US Civil War - Confederate - General
US Civil War - Union - Junior Officer
US Civil War - Union - Senior Officer
US Civil War - Union - General
US Civil War - Union - Cavalry Soldier w/ Cape-style Greatcoat