This (The launching of an invasion into Armenia) was itself hazardous; but the smallness of the number (of the army, not more than 15,000 men) might be in some degree compensated by the tried valour of the army consisting throughout of veterans. A much worse circumstance was the temper of the soldiers, to which Lucullus, in his high aristocratic fashion, had given far too little heed. Lucullus was an able general, and - according to the aristocratic standard - an upright and benevolent man, but very far from being a favorite with his soldiers. He was unpopular, as a decided adherent of the oligarghy;unpopular, because he had vigorously checked the monstrous usury of the Roman capitalists in Asia Minor; unpopular, on account of the toils and fatigues which he inflicted on his troops; unpopular, because he demanded strict discipline in his soldiers and prevented as far as possible the pillage of the Greek towns by his men, but withal caused many a waggon and many a camel to be alden with the treasures of the East for himself; unpopular too on account of his manner, which was polished, stately, Hellenising, not at all familiar, and inclining, wherever it was possible, to ease and pleasure. There was no trace in him of the charm which creates a personal bond between the general and the soldier.
Theodor Mommsen