Played Commands & Colors: Napoleonic’s over at my friend Thomas house yesterday. Commands and Colors, if I understand it correctly, started the whole series of spinoff games using the same or similar gaming system.
You have a hexbased board, which is divided into 3 sections, and by using command cards you and your opponent take turns in activating units and battle it out. The combat system in these games is based upon rolling dice covered in symbols matching the various units of the game (infantry, artillery, cavalry) as well as a "Retreat symbol" and a symbol that always counts as a hit. Terrain features often offer a defensive bonus to the unit standing inside it. It's a simple but elegant system.
Check the rest of the review which includes a short comparison to Battles of Westeros and Memoir44 as well over at my blog:
http://anatolisgameroom.blogspot.se/2012/11/commands-colors-napoleonics-review.html