What is the Basing System?

Grande Armée uses a 3" square base for infantry and cavalry units, to represent a "brigade area" of operations. It doesn't matter what size figures you own, or what basing system you have. You can just make 3" square movement trays, and put your figures on them. If you ever decide you'd like to play something besides Grande Armée (unlikely as that may sound) just put your movement trays aside and your figures are back to their old basings.

All the unit information is contained on your roster, to keep it out of sight of the enemy. So there is no "figure scale" in the traditional sense at all. What matters is the size of the bases. A survey of over 100 Grande Armée players found that the most popular scale for the game is 6mm, which make fabulous dioramas, because you can have four or more "battalions" deployed on the bases, with a skirmish line up front. (Nonetheless I remain faithful to my big 28mm figures.)

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The 15mm Spanish grenadiers in the middle are mounted to another popular game system, and have just been put on a 3" base. The 6mm figures on the right are from my own collection. You can really "see" the brigade deployed in a checkerboard formation with skirmishers up front. Meanwhile on the left, the 28mm figures give a nice, detailed presentation.Artillery units are mounted on rectangular bases 1.5" wide by 3" deep.