From minor nomadic tribe to major world empire, the story of the Parthians' success in the ancient world is nothing short of remarkable. In their early history, the Parthians benefited from strong leadership, a flexible and accommodating cultural identity, and innovative military characteristics that allowed them to compete against and indeed eventually overcome Greek, Persian, Central Asian, and eventually Roman rivals who were often more powerful. Reign of Arrows provides the first comprehensive study dedicated entirely to early Parthian history within the Hellenistic world prior to contact with Rome and the first comprehensive effort since 1938 to evaluate early Parthian political history.