Occupation of Norway By Nazi Germany - German Invasion

German Invasion

On the pretext that Norway needed protection from British and French interference, Germany invaded Norway for several reasons:

• strategically, to secure ice-free harbours from which naval forces could seek to control the North Atlantic;
• to secure the availability of iron ore from mines in Sweden, going through Narvik;
• to pre-empt a British and French invasion with the same purpose; and
• to reinforce the propaganda of a "Germanic empire".

Through neglect both on the part of the Norwegian foreign minister Halvdan Koht and minister of defence Birger Ljungberg, Norway was largely unprepared for the German military invasion when it came on the night of April 8–9, 1940. Consistent with Blitzkrieg warfare, German forces attacked Norway by sea and air as Operation Weserübung was put into action. The first wave of German attackers counted only about 10,000 men, but Germany's luck in achieving complete surprise, and the lack of preparedness of Norway for a large-scale invasion of this kind, gave the German forces their initial success.

The major Norwegian ports from Oslo northward to Narvik (more than 1,200 mi (1,900 km) away from Germany's naval bases) were occupied by advance detachments of German troops. At the same time, a single parachute battalion (the first ever employed in warfare) took the Oslo and Stavanger airfields, and 800 operational aircraft overwhelmed the Norwegian population. Norwegian resistance at Narvik, at Trondheim (the strategic key to Norway), at Bergen, at Stavanger, and at Kristiansand was overcome very quickly; and Oslo's effective resistance to the seaborne forces was nullified when German troops from the airfield entered the city. The first troops to occupy Oslo entered the city brazenly marching behind a German military brass band.

On establishing a foothold in Oslo and Trondheim, they launched a ground offensive against scattered resistance inland in Norway. Allied forces attempted several counterattacks, but all failed. While resistance in Norway had little military success, it had the significant political effect of allowing the Norwegian government, including the Royal family, to escape. Most notably, the German cruiser Blücher, which carried the main forces to occupy the capital, was sunk in the Oslofjord on the first day of the invasion. An improvised defence at Midtskogen also prevented a German raid from capturing the king and government.

Norwegian mobilisation was hampered by the loss of much of the best equipment to the Germans in the first 24 hours of the invasion, the unclear mobilisation order by the government, and the general confusion caused by the tremendous psychological shock of the German surprise attack. The Norwegian Army rallied after the initial confusion and on several occasions managed to put up a stiff fight, delaying the German advance. However, the Germans proved unstoppable due to their superior numbers, training and equipment. The Norwegian army therefore planned its campaign as a tactical retreat while awaiting reinforcements from Britain.

British and French troops began to land at Narvik on April 14. Shortly afterward, British troops were landed also at Namsos and at Åndalsnes, to attack Trondheim from the north and from the south, respectively. The Germans, however, landed fresh troops in the rear of the British at Namsos and advanced up the Gudbrandsdal from Oslo against the force at Åndalsnes. By this time, the Germans had about 25,000 troops in Norway. By May 2, both Namsos and Åndalsnes were evacuated by the British. On May 5, the last Norwegian resistance pockets remaining in South and Central Norway were defeated at Vinjesvingen and Hegra Fortress.

In the north, German troops engaged in a bitter fight at the Battle of Narvik, holding out against five times as many British and French troops until finally withdrawing on May 28. By that time the German offensive in France had progressed to such an extent that the British could no longer afford any commitment in Norway, and the 25,000 Allied troops were evacuated from Narvik merely 10 days after their victory. The Norwegian king Haakon VII and part of his government left for England on British cruiser HMS Glasgow to establish a government-in-exile.

Fighting continued in Northern Norway until June 10, when the Norwegian 6th Division surrendered shortly after Allied forces had been evacuated against the background of looming defeat in France. Among German-occupied territories, this made Norway the country to withstand the German invasion for the longest period of time – approximately two months.

Hitler garrisoned Norway with about 300,000 troops for the rest of the war. By occupying Norway, Hitler had ensured the protection of Germany's supply of iron ore from Sweden and had obtained naval and air bases with which to strike at Britain if necessary.