<P> The Battle of the Bulge (16 December 1944--25 January 1945) was the last major German offensive campaign on the Western Front during World War II . It was launched through the densely forested Ardennes region of Wallonia in eastern Belgium, northeast France, and Luxembourg, towards the end of World War II . The furthest west the offensive reached was the village of Foy - Nôtre - Dame, south east of Dinant, being stopped by the British 21st Army Group on 24 December 1944 . The German offensive was intended to stop Allied use of the Belgian port of Antwerp and to split the Allied lines, allowing the Germans to encircle and destroy four Allied armies and force the Western Allies to negotiate a peace treaty in the Axis powers' favor . Once that was accomplished, the German dictator Adolf Hitler believed he could fully concentrate on the Soviets on the Eastern Front . </P> <P> The surprise attack caught the Allied forces completely off guard . American forces bore the brunt of the attack and incurred their highest casualties of any operation during the war . The battle also severely depleted Germany's armored forces, and they were largely unable to replace them . German personnel and, later, Luftwaffe aircraft (in the concluding stages of the engagement) also sustained heavy losses . </P> <P> The Germans officially referred to the offensive as Unternehmen Wacht am Rhein ("Operation Watch on the Rhine"), while the Allies designated it the Ardennes Counteroffensive . The phrase "Battle of the Bulge" was coined by contemporary press to describe the bulge in German front lines on wartime news maps, and it became the most widely used name for the battle . The offensive was planned by the German forces with utmost secrecy, with minimal radio traffic and movements of troops and equipment under cover of darkness . Intercepted German communications indicating a substantial German offensive preparation were not acted upon by the Allies . </P> <P> The Germans achieved total surprise on the morning of 16 December 1944, due to a combination of Allied overconfidence, preoccupation with Allied offensive plans, and poor aerial reconnaissance . The Germans attacked a weakly defended section of the Allied line, taking advantage of heavily overcast weather conditions that grounded the Allies' overwhelmingly superior air forces . Fierce resistance on the northern shoulder of the offensive, around Elsenborn Ridge, and in the south, around Bastogne, blocked German access to key roads to the northwest and west that they counted on for success . Columns of armor and infantry that were supposed to advance along parallel routes found themselves on the same roads . This, and terrain that favored the defenders, threw the German advance behind schedule and allowed the Allies to reinforce the thinly placed troops . Improved weather conditions permitted air attacks on German forces and supply lines, which sealed the failure of the offensive . In the wake of the defeat, many experienced German units were left severely depleted of men and equipment, as survivors retreated to the defenses of the Siegfried Line . </P>

Where does the battle of the bulge get its name