Under these circumstances, it was evidently impossible for Frederick to retain Silesia unless he could again rally France and other powers to his aid. It was always easy to rouse France against England, its hereditary foe. Thus influenced, Frederick, early in the spring of 1744, entered into a new alliance with France and the Emperor Charles Albert against Maria Theresa. The two marriages which he had so adroitly consummated constrained Russia and Sweden to neutrality. While France, by the new treaty, was engaged to assail with the utmost energy, under the leadership of Louis XV. himself, the triumphant Austrian columns upon the Rhine, Frederick, at the head of one hundred thousand troops, was to drive the Austrians out of Bohemia, and reseat Charles Albert upon his hereditary throne. For this service Frederick was to receive from the Bohemian king three important principalities, with their central fortresses near upon the borders of Silesia. The shrewd foresight of Frederick, and his rapidly developing military ability, had kept his army in the highest state of discipline, while his magazines were abundantly stored with all needful supplies. It was written at the time: “Some countries take six months, some twelve, to get in motion for war. But in three weeks Prussia can be across the frontiers and upon the throats of its enemy. Some countries have a longer sword than Prussia, but none can unsheath it so soon.” Public opinion was then much less potent than now; still it was a power. Frederick had two objects in view in again drawing the sword. One was to maintain possession of Silesia, which was seriously menaced; the other was to enlarge his territory, and thus to strengthen his hold upon his new conquest, by adding to Prussia the three important Bohemian principalities of Königgratz, Bunzlau, and Leitmeritz. By a secret treaty, he had secured the surrender of these provinces in payment for the assistance his armies might furnish the allies; but policy required that he should not avow his real motives. He therefore issued a manifesto, in which he falsely stated, “His Prussian majesty requires nothing for himself. He has taken up arms simply and solely with the view of restoring to the empire its freedom, to the emperor his imperial crown, and to all Europe the peace which is so desirable.”