Following the inconclusive Battle of Entzheim on 4 October, the Imperial army took up winter quarters around Colmar. Rather than doing the same, Turenne split up his army and traveled through the Vosges Mountains before reforming it near Belfort. Taken by surprise, Bournonville sent Hermann to hold Mulhouse, where he was attacked and defeated by Turenne on 29 December. Another French victory at the Battle of Turckheim on 5 January 1675 forced the Imperials to withdraw from Alsace.