William Tell was known as an expert marksman with the crossbow. At the time, Habsburg emperors were seeking to dominate Uri. Hermann Gessler, the newly appointed Austrian Vogt of Altdorf raised a pole in the village's central square with his hat on top and demanded that all the local townsfolk bow before it. Tell passed without bowing, and was arrested. His punishment, being forced to shoot an apple off the head of his son, Walter, or else both would be executed. Tell had been promised freedom if he shot the apple. Tell split the fruit with a single bolt from his crossbow. When Gessler queried him about the purpose of the second bolt in his quiver, Tell answered that if he had ended up killing his son in that trial, he would have turned the crossbow on Gessler himself. Gessler became enraged at that comment, and had Tell bound and brought to his ship to be taken to his castle at Küssnacht. In a storm on Lake Lucerne, Tell managed to escape. He went to Küssnacht, and when Gessler arrived, Tell shot him. Tell's defiance of Gessler sparked a rebellion leading to the formation of the Swiss Confederation.