 General Salan cancelled the operation on November 14, beginning to withdraw back to the De Lattre Line.The only major fighting during the operation came during the withdrawal, when the Việt Minh Regiment 36 ambushed Groupe Mobiles 1 and 4 on Route 2 in a narrow valley near Chan Muong on morning of November 17.The Việt Minh managed to blow up one of the leading tanks, completely blocking the road and then, covered by heavy weapons fire from the surrounding hills, proceeded to methodically destroy the convoy.