The Battle of Pontarlier, also known as the Battle of Pontarlier-La Cluse, was the final military operation of the Franco-Prussian War, that took place from January 29 to February 2, 1871, near Pontarlier and La Cluse-et-Mijoux, not long after the newly formed German Empire and French Republic had a ceasefire. During these engagements, the German Army of the South, under the command of Lieutenant General Edwin von Manteuffel won over the French Eastern Army under the command of General Justin Clinchant, the battle forced the French Eastern Army to withdraw to neutral Switzerland. The strong efforts of the German armies led by General August von Werder in The previous Battle of the Lisaine, as well as that of General Von Manteuffel's armies at the Battle of Pontarlier, resulted in the collapse of the assault on southern Germany which the Eastern Army had expected to be ruined. At the same time, the defeat of the Eastern Army finally forced the French Interior Minister Léon Gambetta to end resistance to the Germans. The defeat at Pontarlier also brought the French heavy losses, including a large number of soldiers being taken prisoner.