I have played a few games with the basic box. But that is more then six months ago now.
From what I remember, it is not Memoir '14-'18! And not Command & Colors WW1 either.
The basic system is the same, but you use two card decks. One on the strategic level and one for tactical decisions.
At first it was a bit difficult to "get into it", the four of us speak a foreign language (Dutch) as prime language, but after our first game, we (me and 3 other gamers) all liked how the game went.
BTW, it is a two player game, we had 2 basic boxes to play.
We will soon play the game again, but I first need to reread the rules again.