It is not needful to follow Duke Frederick in his military career. We may briefly remark that when he succeeded to Urbino by his brother's death in 1444, he undertook generalship on a grand scale. His own dominions supplied him with some of the best troops in Italy. He was careful to secure the goodwill of his subjects by attending personally to their interests, relieving them of imposts, and executing equal justice. He gained the then unique reputation of an honest prince, paternally disposed toward his dependents. Men flocked to his standards willingly, and he was able to bring an important contingent into any army. These advantages secured for him alliances with Francesco Sforza, and brought him successively into connection with Milan, Venice, Florence, the Church of Naples. As a tactician in the field he held high rank among the generals of the age, and so considerable were his engagements that he acquired great wealth in the exercise of his profession. We find him at one time receiving 8000 ducats a month as war-pay from Naples, with a peace pension of 6000. While Captain-General of the League, he drew for his own use in war 45,000 ducats of annual pay. Retaining-fees and pensions in the name of past services swelled his income, the exact extent of which has not, so far as I am aware, been estimated, but which must have made him one of the richest of Italian princes. All this wealth he spent upon his duchy, fortifying and beautifying its cities, drawing youths of promise to his court, maintaining a great train of life, and keeping his vassals in good-humour by the lightness of a rule which contrasted favourably with the exactions of needier despots. While fighting for the masters who offered him _condotta_ in the complicated wars of Italy, Duke Frederick used his arms, when occasion served, in his own quarrels. Many years of his life were spent in a prolonged struggle with his neighbour Sigismondo Pandolfo Malatesta, the bizarre and brilliant tyrant of Rimini, who committed the fatal error of embroiling himself beyond all hope of pardon with the Church, and who died discomfited in the duel with his warier antagonist. Urbino profited by each mistake of Sigismondo, and the history of this long desultory strife with Rimini is a history of gradual aggrandisement and consolidation for the Montefeltrian duchy.