in existence, and the direct connection between the capitals of Italy and Gaul was altogether of the foremost importance. In the direction of the Danube we have already mentioned the laying out of Emona on the upper Save, on the old trade-road from Aquileia over the Julian Alps into the Pannonian territory. This road was at the same time the chief artery for the military communication of Italy with the region of the Danube. Lastly, with the conquest of Raetia was connected the opening of the route which led from the last Italian town Tridentum (Trent), up the Adige valley, to the newly established Augusta in the land of the Vindelici, the modern Augsburg, and onward to the upper Danube. Subsequently, when the son of the general who had first opened up this region came to reign, this road received the name of the Claudian highway.[5] It furnished the means of connection, indispensable from a military point of view, between Raetia and Italy; but in consequence of the comparatively small importance of the Raetian army, and doubtless also in consequence of the more difficult communication, it never had the same importance as the route of Aosta. The Alpine passes and the north slope of the Alps were thus in secure possession of the Romans. Beyond the Alps there stretched to the east of the Rhine the land of the Germans; to the south of the Danube that of the Pannonians and the Moesians. Here, too, soon after the occupation of Raetia, the offensive was taken, and nearly contemporaneously in both directions. Let us look first at what occurred on the Danube. [Sidenote: Erection of Illyricum.]