The Battle of Oslo

On April 9, 1940, 64-year-old Colonel Birger Eriksen commands Oscarsborg Fortress, a key checkpoint all vessels must pass while heading to Oslo.On April 9, 1940, 64-year-old Colonel Birger Eriksen commands Oscarsborg Fortress, a key checkpoint all vessels must pass while heading to Oslo.On April 9, 1940, 64-year-old Colonel Birger Eriksen commands Oscarsborg Fortress, a key checkpoint all vessels must pass while heading to Oslo.