The Added units are: The MLRS, Medium Tank, Light Tank, APC, Flame Tank.
All these units require the Weapons Factory, the APC needs the Hand of Nod, and the Flame+MLRS needs the Radar...
Here are the units, except the Flame Tank...
Also the Nod gets its own hero (like the Ghost Stalker for the GDI).
It is armed with an sniper rifle which can kill from distances, has stealth and can blow up buildings with C4...