After the death of Semiramis, so Diodorus continues his narrative, Ninyas ruled in peace, for he by no means emulated his mother's military ambition and delight in danger. He remained always in the palace, was seen by no one but his concubines and eunuchs, took upon himself no care or trouble, thought only of pleasure and pastime, considered it the object of sovereign power to give himself up undisturbed to all sorts of enjoyment. His seclusion served to hide his excesses in obscurity; he seemed like an invisible God, whom no one ventured to offend even in word. In order to preserve his kingdom he put leaders over the army, viceroys, judges, and magistrates over every nation, and arranged everything as seemed most useful to himself. To keep his subjects in fear he caused each nation to provide a certain number of soldiers every year, and these were quartered together in a camp outside the city, and placed under the command of men most devoted to himself. At the end of the year they were dismissed and replaced by others to the same number. Hence his subjects always saw a great force in the camp ready to punish disobedience or defection. In the same way his descendants also reigned for 30 generations, till the empire passed to the Medes.[10] Slightly differing from this account, Nicolaus tells us that Sardanapalus--to whom in the order of succession the kingdom of Ninus and Semiramis finally descended--neither carried arms nor went out to the hunting-field, like the kings in old times, but always remained in his palace. Yet even in his time the old arrangements were kept and the satraps of the subject nations gathered with the fixed contingent at the gate of the king.[11]