The _Magister militum_ now brought his army over to Constantinople, and quartered it there to overawe the emperor. It appeared quite likely that ere long the Germans would sack the city; but the fate that befell Rome ten years later was not destined for Constantinople. A mere chance brawl put the domination of Gainas to a sudden end. He himself and many of his troops were outside the city, when a sudden quarrel at one of the gates between a band of Goths and some riotous citizens brought about a general outbreak against the Germans. The Constantinopolitan mob showed itself more courageous and not less unruly than the Roman mob of elder days. The whole population turned out with extemporized arms and attacked the German soldiery. The gates were closed to prevent Gainas and his troops from outside returning, and a desperate street-fight ranged over the entire city. Isolated bodies of the Germans were cut off one by one, and at last their barracks were surrounded and set on fire. The rioters had the upper hand; seven thousand soldiers fell, and the remnant thought themselves lucky to escape. Gainas at once declared open war on the empire, but he had not the genius of Alaric, nor the numerical strength that had followed the younger chief. He was beaten in the field and forced to fly across the Danube, where he was caught and beheaded by Uldes, King of the Huns. Curiously enough the officer who defeated Gainas was himself not only a Goth but a heathen: he was named Fravitta and had been the sworn guest-friend of Theodosius, whose son he faithfully defended even against the assault of his own countrymen, [A.D. 401.]