Battle of Thann (1638)

Battle of Thann
Part of the Thirty Years' War
Charles IV, Duke of Lorraine and Bar, the commander of the Imperial Army
Bernard of Saxe-Weimar, commander of the Franco-Weimaran Army
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DateOctober 15, 1638
Location
Thann, Haut-Rhin and Sennen, Haut-Rhin, South West of Colmar, in Alsace
Result Franco-Weimaran victory
Territorial
changes
Imperials withdrawal back to the Franché-Comte
Belligerents
 France
Weimar Army
Holy Roman Empire
Duchy of Lorraine
Commanders and leaders
Bernhard of Saxe-Weimar
Reinhold von Rosen
Wilhelm Otto von Nassau-Siegen (WIA)
Ludwig von Wietersheim 
Count of Wittgenstein (WIA)
Charles de Lorraine
Anne-François de Bassompierre (POW)
Colonel Vernier (POW)
Lieutenant Colonel Fleckenstein (POW)
Units involved
French Army of Germany
Weimar Army
Exiled Lorraine Army
Imperial Army
Strength
4,800 4,000
Casualties and losses
Insignificant 400 killed
44 Colors
baggage train
All the Artillery
Many officers and soldiers captured

The Battle of Thann (1638) was fought between the Weimar Army in the Service of the French, under Bernard of Saxe-Weimar and an Imperial-Lorraine under Charles de Lorraine. The battle was won by the Weimarans and the Imperials retreated back to the Franche-Comté, this was one of many attempts to relieve the besieged Breisach.

The battle was one of Bernard's victories and was a part of Bernard's Upper Rhine campaign, Thann was the last Alsatian stronghold of Charles and he was reduced to the Franche-Comté and Thionville. This victory also fully cemented France's control of Alsace. The site of the battle lies in Alsace between the towns of Thann, Haut-Rhin and Sennen, Haut-Rhin, present-day Cernay, Haut-Rhin.