Battle of Oslo

Colonel Birger Eriksen (Bjørn Sundquist) commands Oscarsborg Fortress as German warships move up the Oslo Fjord on April 9, 1940. His gunners have minutes to decide whether to fire on a vessel flying a flag of truce, knowing one order will drag Norway into war. What matters most, in the end, is what passes between Eriksen and his wife Borghild (Andrea Berntzen) when he comes home.