The board represents Eastern Europe and European Russia in 1812.
Superimposed upon the board is a grid of hexes each of which is approximately 33 miles (about Km 50) across and is either clear or has a colour/symbol reflecting the presence of one of the following terrain types:
fortified city [fortified cities which count towards Victory Points, Rule 14.7, are shaded in red]
forest [impassable for French units]
lake [impassable for all units]
marsh [impassable for French units]
mountain [impassable for all units]
rough ground [impassable for French units]
sea [impassable for all units]; a numbered hex partially covered by the sea comprises a “hex” which may be occupied per Rule 4.1.
In addition, some hexes are bordered by rivers (designated by thick blue lines). Units may cross these without restriction or penalty in the course of Strategic Movement [Rule 8.4], but they do affect Supply and Combat [see Rules 6.2, 11.4, 11.5 and 11.11]. Bridges cross some rivers. These are relevant for Supply and Withdrawals [Rules 6.2 and 11.11]
2.3 Movement is always between two immediately adjacent hexes.