Map showing the swelling of the Bulge as the German offensive progressed creating the nose-like salient during 16–25 December 1944. The Battle of the Bulge (16 December 1944 – 25 January 1945) was the last major German offensive campaign of World War II. It was launched through the densely forested Ardennes region of Wallonia in Belgium, France, and Luxembourg, on the Western Front, towards the end of World War II, in the European theatre.