Washington gave Wayne his instructions, along with permission to modify the plan as necessary. This was an unusual act for Washington, and indicates the high opinion he had of Wayne's tactical abilities. The assault would be difficult: it would be carried out in the dead of night, called for the men to scale the steep, rocky sides of Stony Point, and required surprise. To accomplish this last element, Washington ordered that the men carry unloaded muskets and attack using only bayonets to maintain silence, a tactic often employed by the British army, and had been used to devastating effect against Wayne two years prior at Paoli.