After defeating Poland. Araund December 8 click on your unit in Palermo and move it to a port and move it each turn closer to Algiers (as Italy, you are in a peace with the Allies, so the unit is safe).


Wait a couple of turns (declare a war on Benelux countries and do normal stuff as Germany)

After Italy join Axis move your transport like in the picture below (I found out that AI always leaves the city). You must get Algiers before the capitulation of France.


After taking Paris as Germany click No in the event.



Congratulations, you have just conquered all of France araund May /June without the need to send your units dangerously across the sea.