That time Emperor Napoleon escaped from the island he was imprisoned on after his army was finally defeated, snuck back into France under the nose of King Louis XVIII and literally every royal guard and roadblock from Marseillais to Paris, then when he was actually caught just outside of Paris, he managed to persuade the soldiers (who just so happened to be former Bonapartists) to escort him into Paris where he managed to successfully cause the king to flee, on top of raising a full army to wage war against Europe AGAIN. The only time in history an emperor took back an entire country just by waving his hat.