The Thirty Years War of 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 famine and disease. The war was part of the German religious struggle that was initiated by the Protestant Reformation of the 16th century. The recent victory at Jankau seemed an opportunity to take Bavaria out of the war, and the French chief minister, Cardinal Mazarin, ordered Turenne to draw the Bavarians into the battle of Mergentheim on May 5, 1645, which was a absolute disaster for the French. In the battle simulation I will try to correct the flaws presented in the historical analysis, testing improvements in maneuvers. And then, we will check which maneuver will prevail, both being instructed with the best and with maximum effort.