Played a game of the Feuer und Furia Francese rules on Sunday. We used two of the Federal Corps (total of about 36 bases plus 4 artillery bases) from Gettysburg and one Confederate (32 infantry bases and 6 artillery bases). I had not played the rules before, and have only played the original Fire and Fury rules once, but found they gave a quickly moving free flowing game. The mechanisms are pretty straightforward and very easy to pick up. I certainly think they are worth a serious look if you want to play Gettysburg using 1/300 scale figures. My armies use a 20mm frontage for a single base, although I have quite a lot of multiple bases, as they were originally based for Polemos.