A part of the Goths in the north of Italy retained their independence after the surrender of Witiges. They raised Hildebald to the throne, which he occupied about a year when he was murdered by one of his own guards. The tribe of Rugii then raised Eraric their leader to the throne; but on his entering into negotiations with the Romans he was murdered, after a reign of only five months. Totila was then elected king of the Goths, and had he not been opposed to the greatest men whom the declining age of the Roman Empire produced, he would probably have succeeded in restoring the Gothic monarchy in Italy. His successes endeared him to his countrymen, while the justice of his administration contrasted with the rapacity of Justinian’s government, and gained him the respect and submission of the native provincials. He was on the point of commencing the siege of Rome, when Belisarius, who after his departure from Ravenna had been employed in the Persian War, was sent back to Italy to recover the ground already lost. [Sidenote: [544-547 A.D.]] The imperial forces were completely destitute of that unity and military organisation which constitute a number of different corps into one army. The various bodies of troops were commanded by officers completely independent of one another, and obedient only to Belisarius as commander-in-chief. Justinian, acting on his usual maxims of jealousy, and distrusting Belisarius more than formerly, had retained the greater part of his body-guard and all his veteran followers at Constantinople; so that he now appeared in Italy unaccompanied by a staff of scientific officers and a body of veteran troops on whose experience and discipline he could rely for implicit obedience to his orders. The heterogeneous elements of which his army was composed made all combined operations impracticable, and his position was rendered still more disadvantageous by the change that had taken place in that of his enemy. Totila was now able to command every sacrifice on the part of his followers, for the Goths, taught by their misfortunes and deprived of their wealth, felt the importance of union and discipline, and paid the strictest attention to the orders of their sovereign. The Gothic king laid siege to Rome, and Belisarius established himself in Porto, at the mouth of the Tiber; but all his endeavours to relieve the besieged city proved unsuccessful, and Totila compelled it to surrender under his eye and in spite of all his exertions.