The scale of the British force being mobilised makes the German invasion look extremely risky. A shift of about a day could have sent German destroyers crowded with soldiers into a substantial British naval force. Those destroyers would have been especially vulnerable if intercepted at sea before they could land their troops. British forces were caught unready, and the invasion's timing worked in Germany's favour.
Notable Point · 9:33-10:58
Why Germany's invasion of Norway was a gamble
British preparations show how narrowly German invasion forces avoided a stronger naval interception.