Special Operations Squad

The Special Operations Squad (特別作戦班) was an elite squad hand-picked by Levi.

They were considered the most elite squadron, having a total kill record exceeding 200 and were capable of killing nigh any Titans in their way. They had the ability to sync with each other to coordinate their attacks without talking. They had the mission to protect Eren Yeager from any Titan and the secret objective to lure the Female Titan into a trap, but the mission failed. All original members of the Special Operations Squad, except for Eren and Levi, were killed by Annie Leonhart.

After the events of the believed Breach of Rose and the massacre during Eren's rescue, Levi forms this squad anew with its members now being the remaining soldiers of the 104th Trainees Squad's Top 10 in order to watch over Eren and Historia Reiss.

Original
The original Special Operations Squad were hand-picked by Levi himself for the purpose of protecting Eren.

During the 57th Expedition, the four members: Petra Ral, Oluo Bozado, Eld Jinn and Gunther Schultz were all killed by the Female Titan.

At that time, the only remnants of the Team were Eren and Levi.

Current
After rescuing Eren from Bertholdt and Reiner, Levi took it upon himself to form a new Special Operations Squad. The new team consists of what's left of the 104th squad's top Ten graduates and Armin. They will serve to protect Eren and Historia.