Operation Weserübung

Operation Weserübung
Part of Norwegian campaign
Clockwise from top left:
  • German soldiers advancing towards Pålsbrøtin, southwest of Bagn in Sør-Aurdal Municipality, Norway
  • Norway's Oscarsborg Fortress, under attack from Luftwaffe bombers
  • Junkers Ju 52 transport aircraft flying low above Danish rooftops
  • German tanks driving through Horsens in mainland Denmark
  • Danish position on the southern outskirts of Aabenraa near the German border
  • A Norwegian field gun in action
Date9 April – 10 June 1940
(2 months and 1 day)
Location
Result German victory
Territorial
changes
Belligerents
 Germany
Commanders and leaders
Strength
  • 9 divisions
  • 1 artillery battalion
  • 1 motorized rifle brigade
  • Total: 120,000
  • Denmark:
  • 2 divisions: ~14,500
  • Norway:
  • 6 divisions: ~52,000
  • Denmark and Norway: ~66,500
  • Allies: ~35,000
  • Total: ~101,500
Casualties and losses
  • Kriegsmarine:
  • 1 heavy cruiser
  • 2 light cruisers
  • 10 destroyers
  • various U-boats, transports and smaller warships
  • Total:
  • 5,296 casualties
  • Denmark:
  • 26 killed
  • 23 wounded
  • Norway:
  • 116 ships lost
  • 1,700 killed

  • Royal Navy:
  • 1 aircraft carrier
  • 1 heavy cruiser
  • 1 light cruiser
  • 7 destroyers
  • 1 submarine
  • various transports and smaller warships
  • French Navy:
  • 1 destroyer
  • 1 submarine
  • Polish Navy:
  • 1 destroyer
  • 1 submarine
  • Allies: 4,902 casualties
  • Total: 6,602 casualties

Operation Weserübung (German: Unternehmen Weserübung [ˈveːzɐˌʔyːbʊŋ], transl.Operation Weser Exercise, 9 April – 10 June 1940) was the invasion of Denmark and Norway by Nazi Germany during World War II. It was the opening operation of the Norwegian Campaign.

In the early morning of 9 April 1940 (Wesertag, "Weser Day"), German forces occupied Denmark and invaded Norway, ostensibly as a preventive manoeuvre against a planned Anglo-French occupation of Norway known as Plan R 4, which developed as a response to a German invasion of Norwegian territory. After the rapid occupation of Denmark, in which the Danish military was ordered to stand down as Denmark's government did not declare war with Germany, German envoys informed the governments of Denmark and Norway that Germany's forces had come to protect both countries against Anglo-French attacks. Significant differences in geography, location and climate between the two nations made the actual military operations very dissimilar.

The invasion fleet's nominal landing time, Weserzeit (Weser Time), was set to 05:15.