Jaegerists (Anime)

The Jaegerists (イェーガー派) are a rebel faction supported by civilians and former soldiers from the Paradis military. Their goal is to reunite Eren Jaeger with his half-brother Zeke, and to create the "New Eldian Empire" (新生エルディア帝国).

Structure
The group is known to consist of over a hundred members, many of them from the Scout Regiment. However, the true extent of their influence is unknown with many soldiers and civilians vowing to devote their hearts to Eren Jaeger.

Marley arc
Eren began to act on his own while defying the military that intended to feed Zeke Jaeger to Historia Reiss upon his arrival to Paradis.

War for Paradis arc
After Eren's infiltration of Marley and the resulting Raid on Liberio, he was arrested for his actions which resulted in the deaths of several Scout Regiment soldiers. Word starts to spread about his imprisonment and the ones who leaked the story are arrested as well. Meanwhile, protesters start to gather and demanding that Eren be released from his confinement.

At some point, more people began to reveal that they see Eren Jaeger as their savior who could save the Eldian Empire.

Meanwhile, Jaegerists within the Scout Regiment would begin covertly working with Zeke's trusted follower Yelena and procure wine for the soldiers detaining Zeke within the Titan Forest. This wine was taken off the captured Marleyan ships and is tainted with Zeke's spinal fluid; it was also instructed to be given out to many senior heads of the Military to neutralize them as possible threats.

Eventually, several members plant a bomb in a chair belonging to Commander Dhalis Zachary and place it in his office. They later trigger the bomb, killing Zachary and several members of the Military Police. At roughly the same time, Eren uses his newly granted powers of the War Hammer Titan to escape his cell. While this happens, the other members free Eren's allies and escape the prison as well. Regrouping out in the mountains, Eren meets with his followers and orders them to locate Zeke.

After Eren's escape, the top military officials meet with Dot Pyxis who believes the Jaegerists will target anyone who knows where Zeke is being held and then capture Queen Historia, who could act as a replacement for Zeke. Pyxis then declares they will negotiate with Eren using Zeke's location and grudgingly decides to disregard their assassination of Dhalis Zachary in order to avoid more deaths, stating it is a cheap price to pay. However, this is just a ruse of the commander to abduct their leader and steal the Founding Titan from him.