There was something on tv saying that norwegian spec ops troops trained in britain was some of the first that did a succsessful operation. And yes, the best norwegian spec forces are still trained in britain.
It was young people around 20 and they were well known in the mountains. They outmanoeuvred the german in the terrain with skis.
They blew up something in a important factory under german control.
After this, the germans only produced things in their own country! huray! =)