Battle of Lola Sayu/Legends

This battle took place around 21 BBY during the Clone Wars.

Prelude
"As you are aware, the Citadel is their most isolated and impenetrable detention facility. No one has ever escaped.''" "''There's a first time for everything."

- Plo Koon and Anakin Skywalker

Returning to Coruscant, Jedi Master Even Piell was captured by the Separatists as Piell had information on Nexus Routes, vital hyperspace valuable to both the Republic and the Separitists.

The Mission
Thus, as a result, an elite team of clones led by Obi-Wan Kenobi, Anakin Skywalker and Ahsoka Tano prepared for a rescue mission to the Citadel where Piell was being held, on the planet Lola Sayu. With the help of reprogrammed battle droids, the Jedi were able to avoid life-form scanners around Lola Sayu as they had earlier encased themselves in carbonite. The droids then landed the shuttle in a hidden cavern below the Citadel. Over there, as the winds were too strong and that the walls leading to the Citadel were covered in electro-mines, the team were forced to free-climb. They almost made it to the top after narrowly avoiding detection from a Droideka and two super battle droids, when a clone lost balance and detonated a mine, killing him and alerting the Citadel warden, Osi Sobeck to the team's presence. Osi Sobeck tried hindering the team's progress by activating turrets and using electrified walls that killed another trooper but they were successful in rescuing Master Piell. On their way to find Piell's navy officers and their captain, Wilhuff Tarkin, they were confronted by Sobeck's special unit of commando droids. Although the commando droids had the advantage at first, the rescue team were able to destroy the droids and were successful in rescuing the fleet officers after destroying a few more commando droids.

Phase Two of the plan
The Jedi then split up into to two groups. Anakin, Echo, Ahsoka Tano, Fives and Rex went with Captain Tarkin and two rescued clones, while Commander Cody, Obi-Wan, Even Piell, and six other clones went to create a diversion. Unfortunately, they didn't know that R2 had already arrived and was already inside the Citadel. Obi-Wan and his group were thus, captured after falling into a trap. Osi Sobeck, the Citadel's warden, brought all the prisoners to him, and executed one of the clones, before ordering two battle droids to lock them up in the detention level. However, R2-D2 and OOM-10 rescued them from the battle droids before they got there. Anakin and his group went to get R2-D2 and the shuttle. R2-D2, his squad of battle droids and attempted to smuggle the team onto the team but the tactical droid, K2-B4 alerted the whole prison to OOM-10's reprogramming and ordered no one on board the shuttle. A firefight then ensued and Anakin and his group arrived. Heavy weapons fire destroyed the shuttle, and killed ARC trooper Echo and one of R2-D2's battle droids in the blast. ARC trooper Fives was left grieving the loss of his brother. With the shuttle destroyed, the group call for support from Coruscant and while waiting, hid in the caverns under the Citadel. Shortly after, the group was ambushed repeatedly, causing the deaths of at least four clones and Master Piell. The remainder of the group reached the extraction point, and were rescued by Masters Plo Koon, Saesee Tiin, Adi Gallia, and Kit Fisto.

Notes and references
Schlacht von Lola Sayu