The Battle of the Bulge (aka the Ardennes Offensive) was a major surprise German offensive launched through the densely forested Ardennes mountain region on the Western Front. Though initially successful, the battle ended up being a decisive Allied victory, depleting an already weakened German army as both valuable reserves and equipment were lost. – See more at:
http://www.historynet.com/battle-of-the-bulge#sthash.ssvElNpB.dpuf
