THE IRONCLAD WARSHIP
Another lesson in warfare was taught when the ironclad MERRIMAC and MONITOR met and fought for mastery in Hampton Roads. The ironclad vessel was not then a new idea in naval architecture, but its efficiency as a fighting machine was then first demonstrated. Iron for armor soon gave way to thick and tough steel, while each improvement in armor led to a corresponding improvement in guns and projectiles, until now a battle at sea has grown to be a remarkably different affair from the great ocean combats of Nelson’s time.
But development in the art of war has not ceased with the improvement in older types of weapons. New devices, scarcely thought of in former wars, have been introduced. These include the use of the balloon and aeroplane as scouting devices, of the bomb filled with explosives of frightful rending power, and of the submarine naval shark, designed to attack the mighty battleships from under water.