The spring of 56 B.C. found Caesar at the seat of war. His ships were ready on the Loire. But the navy of the Veneti was strong. They were a sea-going folk, who knew their own low rocky coast, intersected by shallow inlets of the sea; they knew their tides and their winds. Their flat-bottomed boats were suitable to shallows and ebbing tides. Bows and stern stood high out of the water to resist heavy seas and severe gales; the hulls were built of oak. Leather was used for sails to withstand the violent ocean storms. The long Roman galleys were no match for these, and things would have gone badly had not Caesar devised a plan for cutting the enemy's rigging with hooks "sharpened at the end and fixed to long poles." With these, the Romans cut the rigging of the enemy's ships forming the fleet of Brittany; the sails fell and the ships were rendered useless. One after another they were easily captured, and at sunset the victory lay with the Romans. The whole of Gaul, from the Rhine to the Pyrenees, seemed now subdued. Caesar had conquered as he explored, and the skill of his well-disciplined army triumphed everywhere over the untrained courage of the barbarian tribes. Still, the German tribes were giving trouble about the country of the Rhine, and in the words of the famous _Commentaries_, "Caesar was determined to cross the Rhine, but he hardly thought it safe to cross in boats. Therefore, although the construction of a bridge presented great difficulties on account of the breadth, swiftness, and depth of the stream, he nevertheless thought it best to make the attempt or else not cross at all." Indeed, he wanted to impress the wild German people on the other side with a sense of the vast power of the Roman Empire. The barbarian tribes beyond must, indeed, have been impressed with the skill of the Roman soldier. For in ten days the bridge was completed: timber had been hewn from the forest, brought to the banks of the Rhine, worked into shape, piles driven into the bed of the river, beams laid across. And Caesar led his army in triumph to the other side. They stood for the first time in the land of the Germans, near the modern town of Coblenz, and after eighteen days on the farther side, they returned to Gaul, destroying the bridge behind them. Caesar had now a fresh adventure in view. He was going to make his way to Britain. The summer of 55 B.C. was passing, and "in these parts, the whole of Gaul having a northerly trend, winter sets in early," wrote Caesar afterwards. There would be no time to conquer, but he could visit the island, find out for himself what the people were like, learn about harbours and landing-places, "for of all this the Greeks knew practically nothing. No one, indeed, readily undertakes the voyage to Britain except traders, and even they know nothing of it except the coast."