The Prince was an officer in the army: his flight was therefore desertion; and, in the moral code of Frederic William, desertion was the highest of all crimes. “Desertion,” says this royal theologian, in one of his half-crazy letters, “is from hell. It is a work of the children of the Devil. No child of God could possibly be guilty of it.” An accomplice of the Prince, in spite of the recommendation of a court martial, was mercilessly put to death. It seemed probable that the Prince himself would suffer the same fate. It was with difficulty that the intercession of the States of Holland, of the Kings of Sweden and Poland, and of the Emperor of Germany, saved the House of Brandenburg from the stain of an unnatural murder. After months of cruel suspense, Frederic learned that his life would be spared. He remained, however, long a prisoner; but he was not on that account to be pitied. He found in his gaolers a tenderness which he had never found in his father; his table was not sumptuous, but he had wholesome food in sufficient quantity to appease hunger: he could read the Henriade without being kicked, and could play on his flute without having it broken over his head. When his confinement terminated he was a man. He had nearly completed his twenty-first year, and could scarcely be kept much longer under the restraints which had made his boyhood miserable. Suffering had matured his understanding, while it had hardened his heart and soured his temper. He had learnt self-command and dissimulation; he affected to conform to some of his father’s views, and submissively accepted a wife, who was a wife only in name, from his father’s hand. He also served with credit, though without any opportunity of acquiring brilliant distinction, under the command of Prince Eugene, during a campaign marked by no extraordinary events. He was now permitted to keep a separate establishment, and was therefore able to indulge with caution his own tastes. Partly in order to conciliate the King, and partly, no doubt, from inclination, he gave up a portion of his time to military and political business, and thus gradually acquired such an aptitude for affairs as his most intimate associates were not aware that he possessed.