Great War is Battlefront's expansion of their Flames of War rules, adapting them from WW2 to reflect combat in WW1, specifically focusing on 1918. The rules are provided as a 37 page supplement that requires the 3rd edition core FoW rulebook in order to use. Battlefront is supporting the Great War rules with two initial opposing forces: Germans and British. These two armies will be available around the August/September 2014 timeframe and will include infantry centric forces supported by artillery and small sections of armored tanks.