1st Battalion Zouaves Volunteer Infantry, also known as Coppens Zouaves.
This regiment was formed of 6 companies with officers and staff in Pensacola Florida 1861. They would travel north to fight in the Eastern Theater for the Army of Northern Virginia.
The reverse view. A Zouave uniform, flowing red pantaloons, short shell jacket, red fez cap, and plenty of braid. They must have made a colorful scene on the march.