Battle of the Bulge (film)

The filmmakers attempted to condense a battle which stretched across parts of Germany, Belgium and Luxembourg and lasted nearly a month into under 3 hours. They also shot parts of the film on terrain that did not resemble actual battle locations. This left them open to criticism for lack of historical accuracy, but they claimed in the end credits that they had 're-organized' the chronological order of events to maximize the dramatic story.

 http://en.wikipedia.org/wiki/Battle_of_the_Bulge_%28film%29