GWIII - The Earth Civil War
The Great Wars tries to recreate every major battle sequence seen in the TV series Babylon 5. There are currently 5 mods in production:
GWI - Narn v Centauri - Released
GWII - The Ancient Shadow War - Released
GWIII - The Earth Civil War - Released
GWIV - The Modern Shadow War - In Production
GWV - The Dilgar Invasion - Released
The most up to date is GWIII, being a total conversion of Homeworld, but all the other released mods are perfectly playable, and will become complete in time. See the site and forums for release details as they arise.