There are generally battle plans developed for any conceivable conflict. I would not be terribly surprised if the Pentagon has war plans on file for an invasio

There are generally battle plans developed for any conceivable conflict. I would not be terribly surprised if the Pentagon has war plans on file for an invasion of Canada today. That was also in the heyday of the Prussian General Staff school, which emphasized the whole concept of war plans, with things like mobilization timetables, logistics and troop movements choreographed like chess openings.