Max Manus and Roy Nielsen placing magnetic mines on the SS Donau a German troop ship. Check out the DVD... Max Manus Man of War...It's great history of the resistance.
It's a fascinating history how the king of Norway and all of Parliament and there families escaped the Germans on 9 April 1940. Only because a large troop ship entering the Oslo fjord was torpedoed and sunk, by a with it commander. That gave the government and the king time to escape. And inspire the resistance