and into the Roman river delta. The emperor Julian the Apostate took the opportunity to allow the Salii to settle in Toxandria, south of Batavia, where they had previously been expelled: "[Julian] commanded his army to attack them briskly; but not to kill any of the Salii, or prevent them from entering the Roman territories, because they came not as enemies, but were forced there [...] As soon as the Salii heard of the kindness of emperor Julian the Apostate, some of them went with their king into the Roman territory, and others fled to the extremity of their country, but all humbly committed their lives and fortunes to Caesar's gracious protection." The Salians were then brought into Roman units defending the empire from other Frankish raiders. Ammianus Marcellinus (late 4th century), on the other hand, mentions the Chamavi, normally considered Frankish, as the Germanic tribe who had entered the empire in this area at this time. Unlike the Salii, these Chamavi were expelled from Roman lands, though they clearly lived close by, where their grain was disappointingly unready for Roman use. In a poem from 400, Claudian celebrates Stilicho's pacification of the Germani using names of people which may only be poetic: "Salian now tills his fields, the Sygambrian beats his straight sword into a curved sickle". (The Sugambri had apparently long ago been defeated and moved by the Romans.) From the first half of the fifth century onwards, a group of Franks pushed south west through the boundary of the Roman inhabited Silva Carbonaria and expanded their territory to the Somme in northern France. These Franks, headed by a certain Chlodio, conquered an area which included Turnacum (the modern Belgian city of Tournai) and Cameracum (the modern French city of Cambrai). According to Lanting & van der Plicht (2010), this probably happened in the period 445–450. Chlodio is never referred to as Salian, only Frankish, and his origins unclear. He is said by Gregory of Tours (II.9) to have launched his attack on Tournai through the Carbonaria Silva from a fort named Dispargum, which was in "Thuringia". The most common interpretations of these names are neither in Salian Batavia nor in Toxandria. In 451, Chlodio's opponent Flavius Aëtius, de facto ruler of the Western Roman Empire, called upon his Germanic allies on Roman soil to help fight off an invasion by Attila's Huns. Franks answered the call and