La Rochelle was no sooner taken, and Richelieu rewarded by the title of prime minister than he resumed those projects of humbling the House of Austria, in which he had previously been interrupted. A quarrel about the succession to Mantua afforded him a pretext to interfere; and he did so, after his fashion, not by mere negotiations, but by an army. This expedition proved a source of quarrel between him and the queen-mother, Mary de Medici, who hitherto had been his firm and efficient friend.
The voice of the conqueror of La Rochelle triumphed in council, and his project in the field. The French were victorious in Italy, and the minister equally so over the mind of the monarch.
But Mary de Medici could not forgive, and she now openly showed her hatred of Richelieu, and exerted herself to the utmost to injure him with the king. Though daily defeating her intrigues, the cardinal dreaded her perseverance, and resolved to drag the king with him to another Italian campaign. Louis obeyed, and the court set out for the south, the queen-mother herself accompanying it. Richelieu, however, did not tarry for the slow motions of the monarch. He flew to the army, took upon him the command, and displayed all the abilities of a great general in out-manœuvring and worsting the generals and armies of Savoy. In the meantime Louis fell dangerously ill at Lyons. His mother, an affectionate attendant on his sick-couch, resumed her former empire over him. At one moment his imminent death seemed to threaten the cardinal with ruin. Louis recovered, however, and his first act was to compel a reconciliation, in form at least, between the cardinal and the queen-mother.
The king's illness, although not so immediately fatal to Richelieu as his enemies had hoped, was still attended with serious consequences to him. The French army met with ill success through the treachery of the general, Marillac, who was secretly attached to the queen's party, and the failure was attributed to Richelieu.
Mary de Medici renewed her solicitations to her son, that he would dismiss his minister. Louis, it appears, made a promise to that effect; a reluctant promise, given to get rid of her importunity. Mary calculated too securely upon his keeping it; she broke forth in bitter contumely against Richelieu; deprived him of his superintendence over her household, and treated Madame de Combalet, the cardinal's niece, who had sunk on her knees to entreat her to moderate her anger almost with insult. The king was present, and seemed to sanction her violence so that Richelieu withdrew to make his preparations for exile. Louis, dissatisfied and irresolute, retired to Versailles; while Mary remained triumphant at the Luxembourg, receiving the congratulations of her party. Richelieu, in the meantime, ere taking his departure, repaired to Versailles, and, once there, resumed the ascendant over the monarch. The tidings of this was a thunder-stroke to Mary and her party, who became instantly the victims of the cardinal's revenge. Marillac was beheaded, and Mary de Medici, herself at length completely vanquished by her rival, was driven out of France to spend the rest of her days in exile.
The trial of Marillac had roused the spirit and indignation even of those nobles who had previously respected, and bowed to, the minister of the royal choice. Richelieu not only threatened their order with the scaffold, but his measures of administration were directed to deprive them of their ancient privileges, and means of wealth and domination. One of these was the right of governors of provinces to raise the revenue within their jurisdiction, and to employ or divert no small portion of it to their use. Richelieu, to remedy this, transferred the office of collecting the revenue to new officers, called the Elect. He tried this in Languedoc, then governed by the Duc de Montmorenci, a noble of the first rank, whose example, consequently, would have weight, and who had always proved himself obedient and loyal. Moved, however, by his private wrongs, as well as that of his order, he now joined the party of the nobles and the king's brother, Gaston, Duke of Orleans. That weak prince, after forming an alliance with the Duke of Lorraine, had raised an army. Richelieu lost not a moment in despatching a force which reduced Lorraine, and humbled its hitherto independent duke almost to the rank of a subject. Gaston then marched his army to Languedoc and joined Montmorenci. The Maréchal de Brezé, Richelieu's brother-in-law, led the loyal troops against them, defeated Gaston at Castelnaudari, and took Montmorenci prisoner. This noble had been the friend and supporter of Richelieu, who even called him his son; yet the cardinal's cruel policy determined that he should die. There was difficulty in proving before the judges that he had actually borne arms against the king. "The smoke and dust," said St. Reuil, the witness, "rendered it impossible to recognize any combatant distinctly. But when I saw one advance alone, and cut his way through five ranks of gens-d'armes, I knew that it must be Montmorenci."
This gallant descendant of five constables of France perished on the scaffold at Toulouse. Richelieu deemed the example necessary to strike terror into the nobility. And he immediately took advantage of that terror, by removing all the governors of provinces, and replacing them throughout with officers personally attached to his interests.
Having thus made, as it were, a clear stage for the fulfilment of his great political schemes, Richelieu turned his exertions to his original plan of humbling the House of Austria, and extending the territories of France at its expense. He formed an alliance with the great Gustavus Adolphus, who then victoriously supported the cause of religious liberty in Germany. Richelieu drew more advantage from the death than from the victories of his ally; since, as the price of his renewing his alliance with the Swedes, he acquired the possession of Philipsburg, and opened the way toward completing that darling project of France and every French statesman, the acquisition of the Rhine as a frontier.
The French having manifested their design to get possession of Trèves, the Spaniards anticipated them; and open war ensued betwixt the two monarchies. Richelieu in his wars was one of those scientific combatants who seek to weary out an enemy, and who husband their strength in order not to crush at once, but to ruin in the end. Such, at least, were the tactics by which he came triumphant out of the struggle with Spain. He made no conquests at first, gained no striking victories; but he compensated for his apparent want of success by perseverance, by taking advantage of defeat to improve the army, and by laboring to transfer to the crown the financial and other resources which had been previously absorbed by the aristocracy. Thus the war, though little brilliant at first, produced at last these very important results. Arras in the north, Turin in the south, Alsace in the east, fell into the hands of the French; Roussillon was annexed to the monarchy; and Catalonia revolted from Spain. Richelieu might boast that he had achieved the great purposes of Henry IV., not so gloriously indeed as that heroic prince might have done, but no less effectually. This was effected not so much by arms as by administration. The foundation was laid for that martial pre-eminence which Louis XIV. long enjoyed; and which he might have retained, had the virtue of moderation been known to him.
It was not without incurring great personal perils, with proportionate address and good fortune, that Cardinal Richelieu arrived at such great results. Constant plots were formed against him, the most remarkable of which was that of Cinq-Mars, a young nobleman selected to be the king's favorite, on account of his presumed frivolity. But he was capable of deep thoughts and passions; and wearied by the solitude in which the monarch lived, and to which he was reduced by the minister's monopoly of all power, he dared to plot the cardinal's overthrow. This bold attempt was sanctioned by the king himself, who at intervals complained of the yoke put upon him.