The spot at which Caesar struck the valley was, as we may be sure, that above which the great earthwork stands, opposite Thannington. Here upon the height was fought the first real battle of Rome upon our soil. It was opened by the Britons who "began to annoy the Romans and to give battle." But the Roman cavalry repulsed them so that they again sought refuge in the woods where was their camp, "a place admirably fortified by nature and by art ... all entrance to it being shut by a great number of felled trees." But like all barbarians, the Britons were undisciplined and preferred to fight in detached parties, and as seemed good to each. Every now and then some of them rushed out of the woods and fell upon the Romans, who continually were prevented from storming the fort and forcing an entry. Much time was thus wasted until the soldiers of the Seventh Legion, having formed a _testudo_ and thrown up a rampart against the British fort, took it, and drove the Britons out of the woods, receiving in return a few, though only a few, wounds. Thus the battle ended in the victory of our enemies and our saviours. Caesar tells us that he forbade his men to pursue the enemy for any great distance, because he was ignorant of the nature of the country, and because, the day being far spent, he wished to devote what remained of the daylight to the building of his camp. Caesar speaks of this camp and rightly of course, as a thing of importance. We know from his narrative, too, that it was occupied by some fifteen thousand foot and seventeen hundred horse, with their baggage and equipment for more than ten days. Where did it stand? It must have been within reach of the river, for without plentiful water no such army as Caesar encamped could have maintained itself for so long a period as ten days; exactly where it was, however, we shall in all probability never know. Wherever it was, there Caesar spent the night, both he and his army, sleeping soundly, we may be sure, after the sleepless and anxious nights, one spent in the peril of the sea, the other in a not less perilous night march in a roadless and unknown country. Yet did Caesar sleep? Towards sunset the wind arose, and all night a great gale blew. This was the fourth misfortune the expedition had experienced. It had first been delayed for twenty-four days in starting; it had then lost the wind and had been for hours at the mercy of the tide, only landing at last when the day was far spent after a whole night upon the waters; it had been compelled by lack of water to quit the camp at the landing-place without rest, and utterly weary and sleepless, to undertake a perilous night march in search of water. And now in the darkness, after the first encounter with the enemy, a great gale arose.