This mod has been in development for about 5 years now. Some major features are: corpses of the fallen will now permanently stay, the population caps have been increased, new units, and also each side receives one hero unit, you can play with and against any faction. Heroes, crazy stuff (like The Maus, Powell, zombies,...) can be activated or deactivated in the reward menu. It also contains an infantry only mode, Early war mode, no pop cap mode and quick start mode in the victory conditions. This mod is only for fun! If you are looking for realism, try another one.
Awesome mod, could use some improvement though. Zombies should be able to infect other units and not just kill them. At some point it would be great for the zombies to be able to infect other units. In addition if factors that would make a player lose control over the zombies were to be included. This mod would be epic to no end.