Yes, the Winters in Germany could be extremely cold.
During my first Winter, '55 we were issued with WW11 flying suits used by Bomber Command crews. I think they were made from canvas!
We were then issued with kapok filled jackets and trousers, which were very warm but not waterproof! There were, apparently, waterproof outers but we never received them. There was a rumour they were left overs from the Korean war!