Battle of Tuttlingen
The Battle of Tuttlingen was fought in Tuttlingen on 24 November 1643 between the French army in Germany led by Marshal Josias Rantzau, composed of French soldiers and the so called Weimarans or Bernhardines, German troops once in service of Bernard of Saxe-Weimar. They were defeated by the forces of the Holy Roman Empire, Bavaria and Spain led by Franz von Mercy. Technically, Mercy led a military force composed of his Bavarian army, supported by Imperial, Spanish, and Lorrainer troops. The French army was wiped out in a surprise attack in heavy snowfall along with French strategic gains since 1638. The French court suppressed the defeat and it remains largely unknown today, even among historians of the war. Prelude
In early November the French-Weimarian forces had besieged Rottweil to secure winter quarters along the Danube at Tuttlingen. They captured Rottweil on 18 November but their commander Guébriant was mortally wounded in the siege. His successor Rantzau who just had arrived with reinforcements from Lorraine was despised by officers who originated from the former German army of Bernard of Saxe-Weimar. Outlying detachments of the French were posted at Mühlingen and Möhringen. With the French inactive and his own army reinforced by Imperial troops under Hatzfeld and Lorrainer troops under the exiled Duke Charles, Mercy convinced the other generals to agree to a surprise attack on the French encampment. To maximize surprise, the Imperials approached from the south-east instead of further to the north where the Danube and the French garrison at Rottweil blocked their way. Battle

At mid-afternoon on 24 November, Johann von Werth led 2,000 cavalry in the first assault group against Möhringen and achieved instant success, wiping out a French infantry regiment of 500 men, including Spanish prisoners of war. The Bavarian dragoons captured the French pickets posted near Tuttlingen, allowing the Imperials to seize with minimal opposition the lightly defended French artillery park in the cemetery outside town. Heavy snowfall contributed to the surprise. The Weimarian cavalry in Mühlheim under Reinhold von Rosen attempted to reinforce the French at Tuttlingen but were intercepted and defeated by Mercy's brother Kaspar. Kaspar then destroyed the Weimarian infantry remaining at Mühlheim. The French cavalry fled the scene. The captured guns were used to bombard the French infantry in Tuttlingen and Möhringen, who capitulated the next day along with their commander Rantzau without losing a single man killed. The fighting lasted for a day and a half, not so much due to the effectiveness of Franco-Weimarian resistance but because of the disorganized and isolated nature of their detachments. The 2,000-strong French garrison in Rottweil surrendered a week later. Rantzau's army largely ceased to exist, with 4,500 survivors retreating back across the Rhine River into Alsace. Moreover, Mercy held Rantzau, seven other generals, 9 colonels, 10 guns, the baggage and seven thousand French troops captive. Among the prisoners was the Duke of Montausier. Another 4,000 lay dead or wounded. The Weimarian army was permanently crippled by this disaster and the French were reduced to the positions they had held five years earlier. The French court minimized the defeat and it has remained largely unknown ever since. See also
List of battles

References

Sources
Croxton, Derek. "The Prosperity of Arms Is Never Continual: Military Intelligence, Surprise, and Diplomacy in 1640s Germany." The Journal of Military History, Vol. 64, No. 4 (October 2000), pp. 981–1003. Tuttlingen
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1643 in the Holy Roman Empire
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