Yazid attempted to reverse, with limited success, the reforms of Umar II, which were opposed by the Arab militarist camp in the Caliphate and the Umayyad ruling family. During Umar II's rule the militarist camp led by Maslama may have accepted a temporary pause in activity to recover from the Constantinople debacle. Under Yazid, Maslama and his proteges, including Ibn Hubayra, were restored or appointed to senior commands, Syrian garrisons were reintroduced to Iraq, the traditional annual raids against the Byzantines and the war with the Khazars were restarted, and the grants of estates or generous sums to Umayyad princes resumed. Although Yazid's policies were presumably meant to gain the backing of the ruling elite and restore the flow of war spoils, they proved insufficient to finance the Caliphate's troops, particularly as booty had become increasingly difficult to obtain by the Arab expeditionary forces.