It finally came to a military confrontation between the glorious Byzantine Empire and the filthy French imperialists.
Having amassed almost 190 regiments at the border and sailing a further 60 regiments in 3 navies around the Iberian peninsula, the offensive was precipiated by a flurry of espionage activity, completely destabilising the French before the long overdue declaration of war. The silly Bavarians decided to side with France and got devstated in the first month of the war. Relinguishing Transylvania to me and giving up the core provinces of some of my Austrian possessions was the price for them to remain independant.
My Byzantine marines landed in Normandy and threatened Paris from the north while the bulk of my army invaded southeastern France. After years of warfare and more major battles than can be counted on two hands, one third of France and its overseas colonies were occupied territories. I did get my butt kicked in Paris though, as the Armee Royale was much bigger than anticipated. More than 25 regiments of cavalry alone plus 20 regiments of infantry. Internal unrest threatening further war efforts, peace terms were dictated and Piedmont, Provence, Schwyz, Lombardia and a few overseas possessions changed hands to their rightful and just owners.