Alliance are a serie of different mods. On the Star Wars GC, you can play the civil war Empire vs Rebel era + Black Sun and soon the Republic and CIS.
Here you can see a size comparison, it is bigger than a VSD, similar to one MC80 and smaller to the ISD MKIII from the mod.
ISC - ISD MKIII - TSD - VSD MKIII - MC80
Nice
This picture makes me wish we could do battles in low orbit of the planets with the big ships up in the clouds.
Imagine a Star Destroyer crash landing on top of you.
Very Very Nice!