Yeah, I remember the first one, this is the same thing, Global Defense Initiative Versus The Brotherhood Of Nod. They even got the same actor that played Kane (leader of the Brotherhood) from the first game. This game is a stand alone expansion pack for C&C Tiberium Wars that came out a while back. You might as well grab it Witchy and check it out.
I think after the first C&C they went on a different path with Red Alert all Soviets Vs Allies, I prefer GDi Vs BON, glad they went back to it.