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 Mid-East Allied Forces are generally equal to Marley in terms of military technology, but are superior in some instances.

Being the defender in the battle of Fort Slava, the Allies make use of 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 concrete bunkers.

The Allies were acutely aware of the threat that Titans pose. For example, Allied soldiers were willing to fire on a seemingly unarmed and surrendering Gabi, simply because they suspected that she was an Eldian and might turn into a 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 are capable of destroying even the nine Titans. The guns are fitted on an armored train, which moves on a 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.

Story
When Marley loses the Colossus Titan and the Female Titan during the plan to regain the Founder, the Mid-East Allied Forces take advantage of their enemy's disadvantage and declare war on Marley. Over the course of four years, the Mid-East Allied Forces gradually lose their advantage against the enemy. The Allies' navy, however, deals significant damage to the Marley navy in their naval battles.

At some point before or during the war, the Allies develop the anti-Titan artillery, a heavy cannon designed to kill any Titan in a single shot, even one of the Nine Titans.

After four years, the Allies make a final stand at Fort Slava, a fortress equipped with heavy machine gun defenses and anti-Titan artillery overlooking their last naval station. Commander Magath of the Marley military leads a siege against the fort alongside an 800-man unit of warrior cadets. While Titans are kept on standby, Magath is unable to use them due to the anti-Titan defenses implemented by the Allies. However, when cadet Gabi destroys the armored train carrying artillery around the fort, the Allied soldiers are attacked by Jaws, the Titan of Galliard.