But the greatness and the insolence of Wallenstein raised up enemies against him in all parts of the empire. Fear and jealousy increased the opposition, even in the ranks of the Catholics. His dismissal was demanded by the whole college of electors, and even by Spain. Maximilian, Duke of Bavaria, felt himself eclipsed by the successful general, and was at the head of the cabals against him. The emperor felt, at this crisis, as Ganganelli did when compelled to disband the Jesuits, that he was parting with the man to whom he owed all his supremacy. Long was he undecided whether or not he would make the sacrifice. But all Germany was clamorous, and the disgrace of Wallenstein was ordained. Would the ambitious chieftain, at the head of one hundred thousand devoted soldiers, regard the commands of the emperor? He made up his mind to obey, looking to the future for revenge, and feeling that he could afford to wait for it. Seni had read in the stars that glorious prospects still awaited him. Wallenstein retired to his estates in Bohemia, but maintained the pomp and splendor of a prince of the empire. [Sidenote: Gustavus Adolphus.] Scarcely had he retired from the command of the army before his services were again demanded. One hero produces another. A Wellington is ever found to oppose a Napoleon. Providence raised up a friend to Germany, in its distress, in the person of Gustavus Adolphus, King of Sweden. It was not for personal aggrandizement that he lent his powerful arm to the Protestant princes, who, thus far, had vainly struggled against Maximilian, Tilly, and Wallenstein. Zeal for Protestantism, added to strong provocations, induced him to land in Germany with fifteen thousand men--a small body to oppose the victorious troops of the emperor, but they were brave and highly disciplined, and devoted to their royal master. He himself was indisputably the greatest general of the age, and had the full confidence of the Protestant princes, who were ready to rally the moment he obtained any signal advantage. Henceforth, Gustavus Adolphus was the hero of the war. He was more than a hero; he was a Christian, regardful of the morals of his soldiers, and devoted to the interests of spiritual religion. He was frugal, yet generous, serene in the greatest danger; and magnanimous beyond all precedent in the history of kings. On the 20th of May, 1630, taking his daughter Christiana in his arms, then only four years of age, he presented her to the states as their future sovereign, and made his farewell address. "Not lightly, not wantonly," said he, "am I about to involve myself and you in this new and dangerous war. God is my witness that I do not fight to gratify my own ambition; but the emperor has wronged me, has supported my enemies, persecuted my friends, trampled my religion in the dust, and even stretched forth his revengeful arm against my crown. The oppressed states of Germany call loudly for aid, which, by God's help, we will give them.