*Gaul and Germany.* Caesar had left the land of Gallia Comata crushed but still unsettled and not fully incorporated in the empire. It fell to the lot of Augustus to complete its organization, which was accomplished between 27 and 13 B. C. Subsequent to the transfer of the Narbonese province to the Senate _Gallia comata_ was divided into three districts; Aquitania, Lugdunensis and Belgica, which, however, during the lifetime of Augustus, formed an administrative unity, under one governor with subordinate _legati_ in each district. The colony of Lugdunum was the seat of the administration, as well as of the imperial cult. No attempt was made to latinize the three Gauls by the founding of Roman colonies; but they remained divided into sixty-four separate peoples, called _civitates_, with a tribal organization under the control of a native nobility. As early as 27 B. C. Augustus took a census in Gaul, and on this basis fixed its tax obligations. The rich lands of Gaul were as important a source of imperial revenue as its vigorous population was of recruits for the Roman auxiliary forces. But the Gauls were restive under their new burdens and were in addition liable to be stirred up by the Germanic tribes who came from across the Rhine. An invading horde of Sugambri in 16 B. C. defeated a Roman army and, upon a renewed inroad by the same people in 12 B. C., Augustus determined to cross the Rhine and secure the frontier of Gaul by the subjugation of the Germans to the north. The Germans, like the Gauls at the time of the Roman conquest, were divided into a number of independent tribes usually at enmity with one another and hence incapable of forming a lasting combination against a common foe. Individually they were powerful and courageous, but their military efficiency was impaired by their lack of unity and discipline. Drusus, conqueror of the Raeti, was appointed to command the Roman army of invasion. He first secured the Rhine frontier by the construction of a line of fortresses stretching from Vindonissa (near Basle) to Castra Vetera (near Xanten), the latter of which, with Mogontiacum (Mainz) were his chief bases. Then, crossing the river, in four campaigns (12–9 B. C.) he overran and subjugated the territory between the Rhine and the Elbe. His operations were greatly aided by his fleet, for which he constructed a canal from the Rhine to the Zuider Zee, and which facilitated the conquest of the coast peoples, among them the Batavi, who became firm Roman allies. On the return march from the Elbe in 9 B. C., Drusus was fatally injured by a fall from his horse. His brother Tiberius succeeded him in command and strengthened the Roman hold on the transrhenene conquests. Drusus was buried in Rome, whither Tiberius escorted his corpse on foot, and was honored with the name Germanicus.