I have a Deepcut ‘Steppe’ mat with squares, which is great (used for To the Strongest, For King and Parliament, and Rommel). I also have a Cigar Box mat with fields (but no roads). This is great for WW2 Normandy games, or indeed Napoleonic games. I also have home made mats for Darkest Africa, Wild West, WW2 air games, and a generic one for Saga, plus a plain blue hex mat from Hotz for sea games or Bag the Hun