...e engineering skill, which must have met and pleased his eyes in the department, any trace of what he had left there something more than one year before. For example, the Fort Sumter and works on Sullivan's Island , which fought and defeated the fleet of Admiral Dupont on the 6th of April, 1863, were, in nothing else scarcely than the terrain on which they stood, the same works that Beauregard had found constru...