This is the second book in a major two volume history of the German invasion of Norway in 1940. The Nazi invasion was the first modern campaign in which sea, air, and ground forces interacted decisively.

This volume covers the attempts by Norwegian and British forces to counter the German advance, the challenge to the Royal Navy by the air superiority of the Luftwaffe, the first combined amphibious landings of WWII by Norwegian, British, French, and Polish naval, air, and land forces, and the Allied evacuation in June, including the first carrier task force operation of the war.