How would you handle a battle between a modern army, with their arquebusiers, musketeers, and reiters, and a medieval tech army, with their longbowmen, horse archers and heavy infantry?
My main concern is the Battle rating of units. A unit of longbowmen from DaW has a BR of 3. A unit of flintlock musketeers from GoW ha a BR of 2. Clearly, the battle ratings are not directly compatible, or else we would still be using bows today!
A simple solution that came to my mind is to halve the BR of old-fashioned troops when facing gunpowder era units. But I'm not sure it would be an accurate solution. Any ideas? Did I miss a conversion table somewhere?