Of course they can still send shuttles through, and shuttles would probably be basically functionally invulnerable to anything Hell might throw at them, so if we assume they have functioning brains at all they should still be able to devestate Hell pretty effectively. Actual occupation might be where they have the most difficulties, but I don't see why they couldn't suborn compliant factions of Hell inhabitants like TSW humans did.
Come to think of it, has it ever been established how high the "ceilings" of Hell and Heaven are? Depending on the answer and the geometries of the gravity field there might well be an empty vacuum free-fall zone in the middle of the bubble where you could send starships. Of course they'd need a very big portal, or they might be able to disassemble it and send it through in pieces (hey, it's not like the Baldricks would have any space assets that might shoot at you while you're doing it).
That would indeed be one of the best tactics they could use, but it requires them showing more intelligence/knowledge than they did in canon, where as far as I can remember they never did anything more than commando raids into cities. Maybe they couldn't make a suitably big portal because all their portal specialists were taken up by Belial's sky volcano project. If they follow canon tactics and strategy they'll drop a huge army into an empty desert.Night_stalker wrote:Yes, silly me I forgot how effective the Federation was at lending orbital support to its pathetic ground forces, not to mention the fact that more than likely the Baldricks will smash their way into a city, where there's civilians.
Do the math: civilians in city+occupying forces preventing ANY accurate positioning data= long and bloody Stalingrad style urban combat.