Franz von Mercy
| Franz von Mercy | |
|---|---|
| Born | 1597 | 
| Died | 3 August 1645 (aged 48) Alerheim, Bavaria | 
| Resting place | Ingolstadt 48°45′49″N 11°25′29″E / 48.76361°N 11.42472°E | 
| Parents | 
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| Military service | |
| Allegiance | Holy Roman Empire Bavaria | 
| Branch | Imperial Army | 
| Years of service | 1618–1645 | 
| Rank | Generalfeldmarschall | 
| Conflicts | 
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Franz Freiherr von Mercy (or Merci), Lord of Mandre and Collenburg (c. 1597 – 3 August 1645), was a German field marshal in the Thirty Years' War who fought 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).