Frederick I. died in 1713. If it be true--as we think it is--that the great enterprise of William of Orange for the deliverance of England could not have been undertaken but for the aid he gave that prince, Englishmen and Americans ought to hold his name in especial remembrance. He was succeeded by his son Frederick William I., who is counted a brute by most persons, but whom Mr. Carlyle would have us believe to have been a man of remarkable worth. He had talents, and he increased the territory of his kingdom. When he died, in 1740, he left to his son a kingdom containing 2,500,000 souls, a treasury containing $6,000,000, and an army more than thirty thousand strong, and which was the first force in Europe because of its high state of discipline and of the superiority of its infantry weapon. The introduction of the iron ramrod was a greater improvement, relatively, in 1740, than was the introduction of the needle-gun in the present generation. Nothing but the use of that ramrod saved the Prussians from destruction in the first of Frederick II.'s wars. That gave them superiority, which they well knew how to keep. "The main thing," as Ranke observes, "was a regular step and rapid firing; or, as the king once expressed it, 'Load quickly, advance in close column, present well, take aim well,--all in profound silence.'" The whole business of infantry in the field is summed up in the royal sentence, though some may think that line would be a better word than column; and the Prussian system did favor the linear rather than the columnar arrangement of troops, as it "presented a wide front, less exposed to the fire of the artillery, and more efficient from the force of its musketry." Frederick William I. died in 1740. His successor was Frederick II., commonly called the Great. His history has been so much discussed of late years that it would be useless to mention its details. He raised Prussia to the first rank in Europe. Russia was coming in as a European power, and Spain was then as great as France or England, partly because of her former greatness, but as much from the sagacity of her sovereign and the talents of her statesmen. Louis XV. had lessened the weight of France, and George III. had degraded England. The Austrian house had suffered from its failure before Frederick. All things combined to make of Prussia the most formidable of European nations during the last half of Frederick's reign. When he died, in 1786, the Prussian population amounted to six millions,--the increase being chiefly due to the acquisition of Silesia, which was taken from Austria, and to Frederick's share in the first partition of Poland. He left $50,000,000, and his army contained 220,000 men.