This shares that same fact with Band of Brothers, Carl. Alot of the cast from that production were also non-American, English to be exact. In fact, actor Tom Hardy was in both productions.
I remember that too--especially the Gent who played the Commanding Officer, Dick Winters. I was in Switzerland at the time when they were filming the Battle of the Bulge sequences and remember seeing many of them interviewed on Swiss TV. I was staying with a friend in Rickenbach--not too far from where the filming was going on. We were going to go watch them film some but--his time off was cancelled so he had to return to work.