Excellent discussion, guys. I’ve been away for the holiday, with no access to the site, so I missed the early part of this discussion. Overall, what you’re proposing is all well within canon. There are two factors that aren’t being addressed, mainly because the rpg doesn’t discuss them. I’ll be going into more detail in the future, and they may show up in an expansion, but I’ll touch on them here.
- Q-Beams.
These are the primary Hammer weapons… the big guns in the Iron Empires. They have the following properties:
-they annihilate matter on contact (via a matter/antimatter detonation), but don’t often contact their target directly, being inaccurate and slow. Most damage will be from near-misses.
-they outrange all other naval weapons by a significant margin.
-they can be fired out of atmospheres (or any other particle-rich environment, such as a dust cloud… even from far underground), but not into them.
-They’re massive, and require a lot of power to operate.
- Powered Armor
This isn’t a force-field (we don’t have those in the IE), but a form of powered plate (or ceramic, or layered, or whatever… Sydney, help!) armor. Energy transferred to the powered material (kinetic, heat, shockwave, etc…), is channeled away and vented, allowing the target to survive strikes from most conventional weapons (all the stuff in the Brick), Nuclear weapons and Antimatter weapons being the notable exceptions.
-Again, this technology is bulky and eats power.
The ramifications for fortresses: Fortresses can mount and power more Q-beams, more cheaply, than Hammer forces can. What’s more, ground-based Q-beams can attack anything outside of low orbit, while the attacker can’t respond. Finally, Q-beams can buried a mile underground, and still operate as long as their surface sensors and targetting elements are intact.
The Keep and other key facilities will be shielded with powered armor, rendering them virtually invulnerable to orbital attack except with nuclear weapons or really big asteroid bombs (which have their own problems, as you guys have discussed). So a “real” fortress will be proof against orbital attack, unless the attacker is determined to just burn the entire world. Outnumbered defending Hammer assets can shelter in low orbit, protected by the Q-beams of the fortress below, and preventing the attacking fleet from approaching without suffering horrible losses.
Ultimately, the only sure way to take a major fortress out is via ground assault, sabotage or treachery. Smaller fortresses are another story, and those sorts of fortifications will employ all of the sorts of strategems you’re talking about above.
-Chris