Germany, backed up with no options for peace except to give up their French territory, call for war.
The strengthened forces expecting SASA forces, are told to not underestimate any resistance of the remaining government of France. An entire, full-force blitz-like assault of infantry, specialized units, armor, mobile artillery, and assistance from the Luftwaffe.
The organized assault groups of infantry, armor and artillery (the assault also accompanied by some specialized infantry) begin their attack on both sides of Italy once again, and are comprised mostly of the same men who had attacked Italy before.
Kriegsmarine and Luftwaffe in the channel are prepared and willing to take on and get through anything their airforce, navy or army throws at them.
The Chunnel is completely fortified, blocked off, and guarded.