On 22 November, Haislip gave Leclerc permission to advance on Strasbourg. Leclerc surprised the Germans by advancing over country roads and tracks to bypass their defences. Strasbourg was reached on 25 November, and that afternoon the Tricolour flew over the Strasbourg Cathedral. The German offensive in the Ardennes in December and in Alsace in January led Eisenhower to consider abandoning Strasbourg, but strong opposition to the idea from the French caused him to back down. As a result, the 2e DB was transferred to de Lattre's command to assist in the reduction of the Colmar Pocket.