Franz von Mercy

Franz Freiherr von Mercy, Lord of Mandre and Collenburg, was a German field marshal in the Thirty Years' War who fought with distinction for the Imperial side and was commander-in-chief of the Bavarian army from 1643 to 1645. In that role, he destroyed a French army at Tuttlingen (1643), stalemated another at Freiburg (1644), destroyed a third French army at Herbsthausen (1645) and was killed at the Second Battle of Nördlingen (1645).