I think you have to do this level. Your on Your homeworld (Draconis 5) and in the FMV yuo see the Speaker saying that the Tailaxu have escaped from their cages and are threatening their existance. Then you start the level and a timmer starts with roughly 20 minutes. Mentat tells you that if you capture an outpose the parimiter defence around that outpost will be activated. You have a few engineeres some dust skouts and some other troopers.