The Gulf, Mobile and Northern Railroad Rebels were lightweight, streamlined diesel-electric trains built by American Car and Foundry.

The first two trains, purchased in 1935, provided service over the roughly 450 miles (720 km) between New Orleans, Louisiana, and Jackson, Tennessee.

Unlike other earlier diesel streamliners, these trains were not articulated, as their normal operation required adding and removing cars from the consist.

The aft section was divided into two separate compartments: one was used to transport baggage and the other served as a small railway post office, or RPO (the forward door, located just behind the radiator louvers, was equipped with a mail hook).

It ran from Mobile, to Union, Mississippi with a single coach-sleeper, which was added to the northbound mainline train from New Orleans.