[Mitford's remarks on the strategy of Darius in his last campaign are very just. After having been unduly admired as an historian, Mitford is now unduly neglected. His partiality, and his deficiency in scholarship, have been exposed sufficiently to make him no longer a dangerous guide as to Greek polities; while the clearness and brilliancy of his narrative, and the strong common sense of his remarks (where his party prejudices do not interfere) must always make his volumes valuable as well as entertaining.] His great antagonist came on across the Euphrates against him, at the head of an army which Arrian, copying from the journals of Macedonian officers, states to have consisted of forty thousand foot, and seven thousand horse. In studying the campaigns of Alexander, we possess the peculiar advantage of deriving our information from two of Alexander's generals of division, who bore an important part in all his enterprises. Aristobulus and Ptolemy (who afterwards became king of Egypt) kept regular journals of the military events which they witnessed; and these journals were in the possession of Arrian, when he drew up his history of Alexander's expedition. The high character of Arrian for integrity makes us confident that he used them fairly, and his comments on the occasional discrepancies between the two Macedonian narratives prove that he used them sensibly. He frequently quotes the very words of his authorities: and his history thus acquires a charm such as very few ancient or modern military narratives possess. The anecdotes and expressions which he records we fairly believe to be genuine, and not to be the coinage of a rhetorician, like those in Curtius. In fact, in reading Arrian, we read General Aristobulus and General Ptolemy on the campaigns of the Macedonians; and it is like reading General Jomini or General Foy on the campaigns of the French. The estimate which we find in Arrian of the strength of Alexander's army, seems reasonable when we take into account both the losses which he had sustained, and the reinforcements which he had received since he left Europe. Indeed, to Englishmen, who know with what mere handfuls of men our own generals have, at Plassy, at Assaye, at Meeanee, and other Indian battles, routed large hosts of Asiatics, the disparity of numbers that we read of in the victories won by the Macedonians over the Persians presents nothing incredible. The army which Alexander now led was wholly composed of veteran troops in the highest possible state of equipment and discipline, enthusiastically devoted to their leader, and full of confidence in his military genius and his victorious destiny.