Complex sentence: Another notable Zouave regiment on the Confederate side was "Coppens Zouaves", which were raised by Georges Augustus Gaston De Coppens in 1861, and saw action in the Peninsula campaign and at the battle of Petersburg, all the while being constantly in need of supplies.
Split into simpler sentences: Another notable Zouave regiment on the Confederate side was "Coppen's Zouaves," which were raised by Georges Augustus Gaston De Coppens in 1861. They saw action in the Peninsula Campaign and at the Siege of Petersburg, all the while being short of supplies.