It was the Germans who assumed the offensive. The Sugambri and their allies again seized all the Romans whom they could lay hold of on their bank, and nailed to the cross the centurions among them, twenty in number. The allied tribes resolved once more to invade Gaul, and even divided the spoil beforehand--the Sugambri were to obtain the people, the Cherusci the horses, the Suebian tribes the gold and silver. So they attempted in the beginning of 742 {12.} again to cross the Rhine, and hoped for the support of the Germans on the left bank of the river, and even for an insurrection of the Gallic cantons just at that time excited by the unwonted matter of the census. But the young general took his measures well; he nipped the movement in the Roman territory before it was well set agoing, drove back the invaders even as they were crossing the river, and then crossed the stream on his own part, in order to lay waste the territory of the Usipes and Sugambri. This was a repulse for the time; the plan of the war proper, designed on a grander scale, started from the acquisition of the North Sea coast and of the mouths of the Ems and the Elbe. The numerous and valiant tribe of the Batavi in the delta of the Rhine was soon incorporated--to all appearance, at that time and by amicable concert--in the Roman empire; with its help a communication by water was established from the Rhine to the Zuyder See, and from the latter to the North Sea, which opened up for the Rhine-fleet a safer and shorter way to the mouths of the Ems and Elbe. The Frisians on the north coast followed the example of the Batavi and likewise submitted to the foreign rule. It was doubtless still more the moderate policy than the military preponderance of the Romans, which paved the way for them here; these tribes remained almost wholly exempt from tribute, and were drawn upon for war-service in a way which did not alarm, but allured them. From this basis the expedition proceeded along the coast of the North Sea; in the open sea the island of Burchanis (perhaps Borchum off East Friesland) was taken by assault; on the Ems the fleet of boats of the Bructeri was vanquished by the Roman fleet; Drusus reached as far as the Chauci at the mouth of the Weser. The fleet indeed on its return homewards encountered dangerous and unknown shallows, and, but for the Frisians affording a safe escort to the shipwrecked army, it would have been in a very critical position. Nevertheless, by this first campaign the coast from the mouth of the Rhine to that of the Weser had been gained for Rome. [Sidenote: Death of Drusus.]