Most of the German units are Stoss, most of the Allied units are British Territorials. More on that later. Still, it is everything you need to play and easy to read. Towns and rivers modify the combat die roll by one, trenches by two. Roads give no bonus, but cancel out bad terrain.
Rivers cost two extra points to cross, trenches one.
The devastated area adds one point to movement costs. It reflects an area very torn up from years of fighting, and all on the Allied side, due to a German move to shorten their line. It has a significant impact on the pace of the game. This is an unusual sequence for a WWI game. After attacker and defender have both retreated, the attacker gets a chance to move back.