The Battle of the Bulge started 15 Dec 44 and reached its high point 24 Dec 44. It was fought primarily in the Ardennes Mountains, which extend from northern France into Belgium and Luxembourg. All of these were involved in what some call, the main campaign of WW II.
German planning couldn't have asked for better weather, for it was overcast for most of that period, which deprived the Americans of their superior air support.
The German objective was to split American forces to the north of the invasion corridor, thereby extending a salient (or bulge) through the American forces to the Atlantic.
Their plan was to then pounce on the smaller sized units, which would have been existant had their drive succeeded.
Their main targets were First U.S.Army , under General Hodges, and General Omar Bradley's 12th Army Group.
This expansive operation involved three German Panzer Divisions, 5th, 6th and 7th, which were unexpectedly successful at the outset. Our forces were in winter positions, and did not anticipate such an effort at the time.
However, their anticipated fuel shortages developed, and were not relieved due to their failure to capture American fuel depots, as planned.
They simply ran out of gas, and were unable to overrun American defensive positions.
Then came the "Calvary to the rescue" in the form of General Montgomery's XXX Corps cutting off the German attempt to cross the Meuse River, and General Patton'sThird Army break through of the German encirclement of Bastogne, which he relieved, 25 Dec 44.
This "cut out the lights" of the Battle of the Bulge.
It was an expensive "venture" in man power, costing 70,000 Allied casualties, and 130,00 German.
I was very pleased to hear from you again, Sandra. I hope that in my rambling, I remembered to answer your question.