Mid-East Allied Forces

The Chūtō Rengō (中東連合) is a nation consisting of a coalition of various territories. They are enemies of Marley, who have been at war with their nation after the warriors' failure to capture the Founding Titan. In the past, the Eldia Restorationists had asked them for support against Marley.

Military
The Allies is generally equal to Marley in terms of military technology, but are superior in some instances. Like Marley, it is comparable to a WW1 military in real life.

Being the defender in the battle of Fort Slava, the Allies fields Maxim-style machine guns and heavy artillery installed on the fort's towers to fend off the Marleyan assault. Additionally, its troops are well sheltered in trenches and concrete bunkers.

The Allies was acutely aware of the threat that Titans pose. For example, Allies soldiers were willing to fire on a seemingly unarmed and surrendering Gabi, simply because they suspected that she was Eldian and might turn into Titan in any moment. Perhaps the best example that illustrates the Allies' concern of that threat was the anti-Titan artillery which it developed. Designed solely for the purpose of fighting Titans, it fires 100mm armor-piercing shells which was capable of destroying even the nine Titans. The guns were fitted on an armored train, which move on railway network built around the fort to ensure rapid deployment of the guns.

The Allies presumably had a strong naval force before the battle of Fort Slava, as warrior cadet Udo mentioned that it took four years for the Marleyan Navy to control the sea with almost half of its fleet lost.