'This BLITZKRIEG revision was designed by James F. Dunnigan (who has never played this game) and put into an understandable format by Redmond Simonsen (who has played the game frequently). Mr. Dunnigans ideas and Mr. Simonsens organizational talents) became so intermingled by the time the project was finished that it would probably be best to say that they both did it. Forget about splitting hairs and leave it at that. For more on where all this fusion of talent will lead see the last paragraph in IF LOOKS COULD KILL DEPARTMENT.'The above was taken from the rulebook. The If Looks Could Kill Department alluded to above was in Strategy & Tactics magazine Number 19 where this game come from. The Blitzkrieg Module System (BMS) is 1969 rules set for modifying Avalon Hills Blitzkrieg game. Rules included changes to the Sequence of Play, Zones of Control, Combat Results, Stacking, Railroads, Order of Battles, Production, Supply, Naval Forces, Air Forces, Flak, Weather, Guerillas, Artillery, Scenarios & Victory Conditions, and Minor Country Armies.BMS is very hard to find.Expands: Blitzkrieg - BoardGameGeek