To this at least another 50,000 men must be added for the auxilia of Britain, Spain, Africa, Noricum, and the small garrisons of the inland provinces, making a grand total of 180,000 men. The next forty years saw the figure mount even higher. The remaining client kingdoms in the East, which were still strong enough to furnish 15,000 men for the Jewish war in 67, were annexed, and the appearance of several new units with the titles Flavia or Ulpia shows that more than this number of regular auxilia was raised in their place.156 Even Hadrian seems to have made a few additions to the list, since his foreign policy, though essentially pacific, was based upon a system of frontier defence to which the auxilia were more than ever essential.157 In Appendix I, where the evidence as to the strength and distribution of the auxilia in the second century is discussed in detail, it is suggested that by the middle of the second century the force may have amounted to some 220,000 men, and that even this figure was probably exceeded sixty years later.