Yes, the rules use a grid. I normally use a 6 inch grid (and I have one of the DeepCut studios mats with such a grid), but John's lovely figures were in units too big to fit in 6 inches, so I used an 8 inch grid for this game, so the table was rather small, with only limited scope for manouevre. Still gave a good game, though.
These rules (and their ancient forebear, To the Strongest) allow a large battle to be played to a conclusion in a couple of hours. Ideal for an evening's gaming.
The combination of the grid and the cards really speeds the game up, but there is still plenty of interesting decision making for the players.