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.
Between missions in the campaign, I played several good space and ground battles where you can discover most of the progress.
You can watch the complete HD video here.
Read the complete story at Firefoxccmods.com
Definitely absolute chaos
that's allot of pew pew