The Thirty Years War from 1618 to 1648 is considered one of the most destructive wars in European history. It is estimated that between 4.5 and 8 million soldiers and civilians died as a direct result, while some areas of Germany suffered population declines of more than 50%, also from starvation and disease. This victory in Breitenfeld allowed the Swedes to occupy and establish a secure base in Leipzig, the second most important city in the Saxon electorate. However, although significantly weakened by defeat and forced on the defensive, the Imperial Army prevented them from fully exploiting their victory and prevented John George I, Elector of Saxony, from making peace with Sweden. In the battle simulation, I will try to correct the failures presented in the historical analysis, testing improvements in the maneuvers.