It must, however, be remembered that the strength and discipline which the Assyrian troops possessed in such a high degree, were common to the military forces of all the great states--Elam, Damascus, Nairi, the Hittites, and Chaldaea. It was owing to this, and also to the fact that the armies of all these Powers were, as a rule, both in strength and numbers, much on a par, that no single state was able to inflict on any of the rest such a defeat as would end in its destruction. What decisive results had the terrible struggles produced, which stained almost periodically the valleys of the Tigris and the Zab with blood? After endless loss of life and property, they had nearly always issued in the establishment of the belligerents in their respective possessions, with possibly the cession of some few small towns or fortresses to the stronger party, most of which, however, were destined to come back to its former possessor in the very next campaign. The fall of the capital itself was not decisive, for it left the vanquished foe chafing under his losses, while the victory cost his rival so dear that he was unable to maintain the ascendency for more than a few years. Twice at least in three centuries a king of Assyria had entered Babylon, and twice the Babylonians had expelled the intruder of the hour, and had forced him back with a blare of trumpets to the frontier. Although the Ninevite dynasties had persisted in their pretensions to a suzerainty which they had generally been unable to enforce, the tradition of which, unsupported by any definite decree, had been handed on from one generation to another; yet in practice their kings had not succeeded in "taking the hands of Bel," and in reigning personally in Babylon, nor in extorting from the native sovereign an official acknowledgment of his vassalage. Profiting doubtless by past experience, Assur-nazir-pal resolutely avoided those direct conflicts in which so many of his predecessors had wasted their lives. If he did not actually renounce his hereditary pretensions, he was content to let them lie dormant. He preferred to accommodate himself to the terms of the treaty signed a few years previously by Ramman-nirari, even when Babylon neglected to observe them; he closed his eyes to the many ill-disguised acts of hostility to which he was exposed,* and devoted all his energies to dealing with less dangerous enemies. * He did not make the presence of Cossoan troops among the allies of the Sukhi a casus belli, even though they were commanded by a brother and by one of the principal officers of the King of Babylon.