9. of april 1940:
"Cities/towns Bergen, Stavanger, Egersund, Kristiansand S, Arendal, Horten, Trondheim and Narvik attacked and occupied within 24 hours."
See here:
http://en.wikipedia.org/wiki/Weser%C3%BCbung
And here:
http://www.uboat.net/flotillas/bases/bergen.html