Bayan nasarar mamaye Normandy da kuma gaba da gabashin gabashin kasar ta Faransa, Allied front lines sun fadada daga Nijmegen a arewa zuwa Switzerland mai tsaka tsaki a kudu. An kama birnin Antwerp mai daraja a lokacin turawa, kuma a lokacin da hunturu ya zo, Allies sun mallaki yankin Jamus kusa da birnin Aachen. Adolf Hitler ba da daɗewa ba ya tsara shirin kai hari ga Allied Lines a Belgium da Luxembourg; Rukunin 25 za su kaddamar da harin ba zato ba tsammani ta hanyar Ardennes, da nufin ƙetare kogin Meuse (wanda ake kira Maas a Jamusanci da Dutch) da kuma sake kama Antwerp.
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