“Those who look for spots on the sun, and find something reprehensible even in virtue itself, blame this king,” says Cardinal Richelieu, “for having died like a trooper; but they do not reflect that all conqueror-princes are obliged to do not only the duty of captain, but of simple soldier, and to be the first in peril, in order to lead thereto the soldier who would not run the risk without them.  It was the case with Caesar and with Alexander, and the Swede died so much the more gloriously than either the one or the other, in that it is more becoming the condition of a great captain and a conqueror to die sword in hand, making a tomb for his body of his enemies on the field of battle, than to be hated of his own and poniarded by the hands of his nearest and dearest, or to die of poison or of drowning in a wine-butt.”

Just like Napoleon in Egypt and Italy, Gustavus Adolphus, had performed the prelude, by numerous wars against his neighbors, to the grand enterprise which was to render his name illustrious.  Vanquished in his struggle with Denmark in 1613, he had carried war into Muscovy, conquered towns and provinces, and as early as 1617 he had effected the removal of the Russians from the shores of the Baltic.  The Poles made a pretence of setting their own king, Sigismund, upon the throne of Sweden; and for eighteen years Gustavus Adolphus had bravely defended his rights, and protected and extended his kingdom up to the truce of Altenmarket, concluded in 1629 through the intervention of Richelieu, who had need of the young King of Sweden in order to oppose the Emperor Ferdinand and the dangerous power of the house of Austria.  Summoned to Germany by the Protestant princes who were being oppressed and despoiled, and assured of assistance and subsidies from the King of France, Gustavus Adolphus had, no doubt, ideas of a glorious destiny, which have been flippantly taxed with egotistical ambition.  Perhaps, in the noble joy of victory, when he “was marching on without fighting,” seeing provinces submit, one after another, without his being hardly at the pains to draw his sword, might he have sometimes dreamed of a Protestant empire and the imperial crown upon his head; but, assuredly, such was not the aim of his enterprise and of his life.  “I must in the end make a sacrifice of myself,” he had said on bidding farewell to the Estates of Sweden; and it was to the cause of Protestantism in Europe that he made this sacrifice.  Sincerely religious in heart, Gustavus Adolphus was not ignorant that his principal political strength was in the hands of the Protestant princes; and he put at their service the incomparable splendor of his military genius.  In two years the power of the house of Austria, a work of so many efforts and so many years, was shaken to its very foundations.  The evangelical union of Protestant princes was re-forming in Germany, and treating, as equal with equal, with the emperor; Ferdinand was trembling in Vienna, and the Spaniards, uneasy