Leeb himself personally reconnoitered the terrain, studying the most promising invasion routes and paths of least resistance.[19] Menges noted in his plan that Swiss resistance was unlikely and that a nonviolent Anschluss was the most likely result. With "the current political situation in Switzerland," he wrote, "it might accede to ultimatum demands in a peaceful manner, so that after a warlike border crossing a rapid transition to a peaceful invasion must be assured."[20]