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Aircraft movement from the Russian Front and transport of forces by rail, both to the Ardennes, was noticed but not acted upon, according to a report later written by Peter Calvocoressi and F. Army's intelligence staff predicted a major German offensive, and Ultra indicated that a "substantial and offensive" operation was expected or "in the wind", although a precise date or point of attack could not be given. The offensive was planned with the utmost secrecy, minimizing radio traffic and moving troops and equipment under cover of darkness.
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Once that was accomplished, Hitler could fully concentrate on the eastern theatre of war. Germany's goal for these operations was to split the British and American Allied line in half, capture Antwerp, and then proceed to encircle and destroy four Allied armies, forcing the Western Allies to negotiate a peace treaty in the Axis Powers' favour. The German offensive was supported by several subordinate operations known as Unternehmen Bodenplatte, Greif, and Währung. The phrase "Battle of the Bulge" was coined by contemporary press to describe the way the Allied front line bulged inward on wartime news maps and became the best known name for the battle. The Allies called it the Ardennes Counteroffensive. The Germans referred to it as Unternehmen Wacht am Rhein ("Operation Watch on the Rhine"), while the French named it the Bataille des Ardennes ("Battle of the Ardennes"). It also severely depleted Germany's war-making resources. The surprise attack caught the Allied forces completely off guard and became the costliest battle in terms of casualties for the United States, whose forces bore the brunt of the attack, during all of World War II.
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The Battle of the Bulge (16 December 1944 – 25 January 1945) was a major German offensive campaign launched through the densely forested Ardennes region of Wallonia in Belgium, France and Luxembourg on the Western Front toward the end of World War II in Europe. For other uses, see Battle of the Bulge (disambiguation).
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