The Military Police Brigade is the most prestigious military divison in the manga/anime series Attack on Titan. This due to their work allowing them to live safely within the Inner Wall, abundant resources, and higher authority over other military sectors. However, in reality it is the most corrupted military sector due to a lack of oversight compared to the other sectors of the military. Only the top ten alumni from trainee squads can apply for the Military Police Brigade, even though there are other illicit ways to get in. Nile Dok is the commander of the division.
This is a lazy, corrupt system that benefits from the powers granted to it. They are inexperienced since they only stay in the safety of Wall Sina and never engaged in battle with the titans before.
The senior officers spend all their time gambling and drinking while leaving recruits to do all the work. They also pilfer taxes and misappropriate land.
The Central Branch is introduced in the aftermath of the traitors' being exposed, torturing and murdering Pastor Nick. Their organization is shrouded in mystery, and they actively seek out both Historia Reiss and Eren Yeager for unknown purposes. With the Titan Shifters uncovered and driven out, this mysterious group appears to be the new antagonists of the series.