I take Denmark in late 39, after the focus, to allow my navy to train unmolested in the baltic sea.
Norway invasion starts around April 1940, when the research for naval invasion II is done.
Fall Gelb, the western campaign, saw me recently in a veteran difficulty with all allies max buffed tear up france in 5 weeks.
The main push was through Luxemburg, with 14 armour and mot divisions, while 4 armour/mot pushed through the Netherlands heading towards the Randstad, the fat victory points on the west.
The ardennes push went 3 provinces wide after Luxembourg, racing as fast as possible past the river Meuse, through southern Belgium and northeast France. The armour army got followed up by a 24 inf reserve army, while the two armies on the Belgian border and the Maginot line stretched further inwards.
So, total forces used:
Some 72 infantry divisions, 10 armour and 8 Mot/Cav divisions.
3500 Fighter and 1600 heavy Fighter airplanes, some 800 TAC, 300 CAS. Only tanks ever attacked.
Against maximum buffed France and England.