As it is well known, Denmark surrendered immediately and co-operated with Nazi Germany in order to secure as good a deal possible for it's population during the Second World War. What if Denmark, in light of WW I experience, chose a different path in it's security policy during 1920's and 1930's? Would it be feasible politically, as militarily there's no question it could not be done.
In effect this would mean an armed neutrality in which Denmark would maintain powerful enough armed forces which would prove to be a headache for Germany while simultaneously co-operate with Germany closing all threat of UK naval forces entering the Baltic.
And if this path is chosen, what would be the effects on WW2 with two additional scenarios:
a) Continuing Norwegian neutrality instead of Weserübung
b) Norway conquered anyway with Germany simply taking more risks when conquering Norway and not
using Aalborg airfield.