Thanks Durk, I modded the marching speeds to produce infantry marching rates of 3 regions a turn in good weather and roads. They move faster on major roads. The reduced marching speeds appears to have an impact on supply. I will need to experiment with the supply modifiers to get that to work right.
I just read Carlyles account on Prague. Apparently, the Prussians assaulted and captured a portion of the defenses which made Prague indefensible. At that point the Austrians tried to hand over the city and march out with honours of war but Frederick refused. He demanded surrender and they did. In Browning's book, he states the city leaders demanded that the city be given up rather than destroyed. And according to Carlyle, Prague was defended by 10,000 militia and 4000 regulars. He has the 4000 regulars reinforcing the city before Fredericks arrival. Another source had 1000 regulars garrisoning the city. So probably 5000 regulars and 10,000 militia. The game might have a hard time modeling the surrender of the city. My thougths are maybe an event giving a 50-60 chance of surrender in September or upon Frederick's arrival which disappears in October. So the Prussians have a choice of assaulting the city, sieging the city and hope for surrender or just offer honors of war. The Austrians will have the standard options but with the realization that their troops have a high probability of simply surrendering during the month of September. 17,000 defending troops could put up quite a bit of resistance if they don't surrender and attempt to hold the city.
In Thomas Carlyles Volume on the second Silesian War, apparently Traun was running circles around Frederick. He managed to manuever Frederick out of Bohemia in a couple of months with Frederick doing everything he could to keep Bohemia. Very impressive campaign by Traun. Although he was apparently greatly helped by the Pandours. Constant references to their interference causing problems with Prussian foraging, reconnaissance and communications. Frederick was blind, supply was a constant problem and had great difficulty communicating with the outside world and detachments. Even though Traun was on the offensive, Frederick couldn't bring him into a decisive battle. Not one of Frederick's better campaigns. Although 1745 brought a change of fortune when the Austrians moved into Silesia. I need to mod some of those impacts into the game while Frederick is in Bohemia.