The Ardennes Offensive (16 December 1944 -- 25 January 1945) was a major German offensive on the Western Front and was launched towards the end of World War II. This offensive was called Unternehmen Wacht am Rhein (Operation Watch on the Rhine) by the German armed forces (Wehrmacht). It was officially named the Battle of the Ardennes by the U.S. Army, but it is known to the general public simply as the Battle of the Bulge.
The offensive was launched in the Ardennes. The German offensive was supported by subordinate operations known as Unternehmen Bodenplatte, Unternehmen Greif, and Unternehmen Währung. Germany's planned goal for these operations was to split the British and American Allied line in half, capturing Antwerp, Belgium, and then proceeding to encircle and destroy four Allied armies, forcing the Western Allies to negotiate a peace treaty in the Axis Powers' favor.
The Ardennes Offensive was planned in total secrecy, in total radio silence. Although Ultra, the Allies' reading of secret German radio messages, suggested a possible German offensive, and the United States Third Army predicted a major German offensive, the attack still achieved surprise. The degree of surprise achieved was compounded by the Allies' overconfidence, their preoccupation with their own offensive plans, poor aerial reconnaissance, and the relative lack of combat contact in the area by the U.S. 1st Army. Almost complete surprise against a weak section of the Allies' line was achieved during heavy overcast weather, when the Allies' strong air forces would be grounded.
The "bulge" was the initial incursion the Germans put into the Allies' line of advance, as seen in maps presented in contemporary newspapers.
Most of the American casualties occurred within the first three days of battle, when two of the U.S. 106th Infantry Division's three regiments were forced to surrender. The Battle of the Bulge was the bloodiest of the battles that U.S. forces experienced in World War II; the 19,000 American dead were unsurpassed by those of any other engagement. For the U.S. Army, the battle incorporated more troops and engaged more enemy troops than any conflict before that time. The German objectives ultimately were unrealized. In the wake of the defeat, many experienced German units were left severely depleted of men and equipment, as German survivors retreated to the defenses of the Siegfried Line.
