Andromeda (2000) - 3x16 - Point of the Spear

When the Andromeda responds to a request to destroy atmosphere generators on Samsarra, they encounter a battle group of Pyrians and stand off until the Commonwealth fleet arrives. in a revelation from Trance, Dylan finds out that Trances people believe the Pyrian fleet stronger and better equiped to handle the forthcoming war. With this information, she tells Dylan to pull out and let the Pyrians win so that they can take on the Magog World Ship instead of the renewed Commonwealth.

Dylan sees that the only way to stop them is to destroy the planet that he is trying so hard to save....