Mila Nellus

Mila Nellus is some place where the Transformers have sieges.

Transformers: Prime
At some point there was a siege at Mila Nellus which Team Prime took part in. They broke the siege by having Optimus Prime keep the leader of the opposing force busy while the others followed Ratchet's direction. They succeeded in breaking the siege.

Megatron Returns
Years later, when the Autobots were attacking the Decepticon Spacebridge in orbit around Earth, Optimus reminded them of the Mila Nellus and they used the same plan.