Res Gestae

For the Parthiscus[*](The modern Theiss.) rushing into those lands with winding course, mingles with the Hister.[*](The Danube.) But while it flows alone and unconfined, it slowly traverses a long expanse of broad plain; near its mouth, however, it compresses this into a narrow tract, thus protecting those who dwell there from a Roman attack by the channel of the Danube, and making them safe from the inroads of other savages by the opposition of its own stream; for the greater part of the country is of a marshy nature, and since it is flooded when the rivers rise, is full of pools and overgrown with willows, and therefore impassable except for those well acquainted with the region. Besides this the larger river, enclosing the winding circuit of an island, which almost reaches the mouth

So, at the emperor’s request, they came with their native arrogance to their bank of the river, not, as the event proved, intending to do what they were bidden, but in order not to appear to have feared the presence of the soldiers; and there they stood defiantly, thus giving the impression that they had come there to reject any orders that might be given.

But the emperor, suspecting that this might happen, had secretly divided his army into several bands, and with swift speed enclosed them, while they were delaying, within the lines of his own soldiers; then standing with a few followers on a loftier mound, protected by the defence of his guards, in mild terms he admonished them not to be unruly.