These disasters give new hope to the Britons. They rapidly muster their men, and form an ambush in an uncut field of grain not far from the Roman camp. When the Seventh Legion comes out to reap the corn it is suddenly beset on all sides by a host of horsemen and charioteers. The cloud of dust raised by the chariot wheels betrays the fight to the sentinels of the camp. Cæsar hurries to the spot, and just manages to save the reapers from utter destruction and convey them back to his stronghold. The Britons follow, and make the grievous mistake of attacking the Romans in their trenches. Beaten back time after time, they again retreat to their fastnesses in the woods, and once more offer submission. Cæsar is quite ready for peace. His troops are weary, for they have been seventeen or eighteen days on the island, and the struggle has never ceased. His twelve thousand men are all too few to overcome the obstinate Britons. He does not wait even to receive the promised hostages, but, taking advantage of the first fair wind that blows, he returns to Gaul, baffled and beaten, without a single token of conquest. Next year he comes again. The warm spring days that bring the swallows bring the Roman galleys once more. This time he does not despise his enemy. Twenty-five thousand foot and two thousand horse, embarked on eight hundred ships, speed towards the threatened shore. He lands without striking a blow, and stray prisoners inform him that his advance is to be challenged at a ford on the Stour twelve miles away. He is determined not to lose an hour. Through the night his legions tramp over the unknown country, and in the cold gray of the early dawn they find themselves on the bank of a reedy river, with the foe drawn up on the opposite side. The charge is sounded, and the Roman cavalry dash into the river with the utmost impetuosity. They break through and through the ranks of the British infantry, their bronze swords being no match for the tempered iron of the Roman brands and javelins. Again the Britons give way, and betake themselves to their woodland fortresses barricaded with the trunks of felled trees. Here Cassivellaunus, behind his stockade, holds out stoutly. But his fortifications are carried at last, and the four “kings” of Kent, who have failed in an attack on the Roman camp, come once more in humble guise to offer their submission. Cæsar is again ready for peace. Forest fighting is too perilous for his taste. Amidst the mazes of the woodland the Roman formations are broken up, and in hand-to-hand combats the Britons are the equals of his best and most highly-trained soldiers. So he yields to the inevitable. He receives hostages and empty promises of annual tribute. Again he departs, leaving nothing to mark his so-called conquest but the earthworks of his deserted camps.