If you loved Command and Conquer, you will most likely like this game too. As of now there are 2 factions, a few missions, and, more importantly, skirmish.
In skirmish, you can set the AI difficulty and its focus (offensive/defensive, infantry/vehicles/aircraft) and this offers quite a lot of variability. AI is pretty smart and fairly aggressive, so even though the game is in EA, you can already have a lot of fun.

I like this game - I enjoyed the Tutorial missions - decent VA work.

However, I really bought it to play with my friends (I bought them a copy too!) - we play a lot of PvE games and were hoping to add this to our roster of our weekly online get-together, but there are four of us and the current maps are absolutely tiny and there's no way the four of us can play together against the AI in any sensible way. So, we've dropped it - if (much) bigger maps becomes a thing then we'll be back - but until then it's more classic Supreme Commander/Rusted Warfare/8-bit Armies/BAR/etc for us.

I've recommended the game, because if you don't have the same needs as me and my friends you'll have a good time with this.