The German operation succeeded despite risks that should have made its port seizures extremely costly. In this interpretation, much of the responsibility lies with the Norwegian government's failure to alert reserves and man defenses promptly after Germany invaded Denmark. Mobilization could have been presented as a neutral response to both British and German threats, avoiding a public commitment to either side while still putting armed troops in the invaders' path.
Notable Point · 2:34:21-2:36:00
How delayed Norwegian mobilization aided the German invasion
Norway could have mobilized in defense of neutrality and forced German landing groups to confront manned forts and organized troops.