 Complete the following phrase:  In 401 Stilicho travelled over the Alps to Raetia, to scrape up further troops. He left the Rhine defended only by the dread of Roman retaliation, rather than by adequate forces able to take the field. Early in spring, Alaric, probably desperate, invaded Italy, and he drove Honorius westward from Mediolanum. He besieging the emperor in Hasta Pompeia in Liguria. Stilicho returned as soon as the passes had cleared, meeting Alaric in two battles near 