Cæsar spent but twenty-eight days in his German expedition. In ten he built his admirable bridge across the Rhine; in eighteen he performed all he proposed by entering that country. When the Germans saw the barrier of their river so easily overcome, and Nature herself, as it were, submitted to the yoke, they were struck with astonishment, and never after ventured to oppose the Romans in the field. The most obnoxious of the German countries were ravaged, the strong awed, the weak taken into protection. Thus an alliance being formed, always the first step of the Roman policy, and not only a pretence, but a means, being thereby acquired of entering the country upon any future occasion, he marched back through Gaul to execute a design of much the same nature and extent in Britain.
The inhabitants of that island, who were divided into a great number of petty nations, under a very coarse and disorderly frame of government, did not find it easy to plan any effectual measures for their defence.B.C. 55. In order, however, to gain time in this exigency, they sent ambassadors to Cæsar with terms of submission. Cæsar could not colorably reject their offers. But as their submission rather clashed than coincided with his real designs, he still persisted in his resolution of passing over into Britain; and accordingly embarked with the infantry of two legions at the port of Itium.[5] His landing was obstinately disputed by the natives, and brought on a very hot and doubtful engagement. But the superior dispositions of so accomplished a commander, the resources of the Roman discipline, and the effect of the military engines on the unpractised minds of a barbarous people prevailed at length over the best resistance which could be made by rude numbers and mere bravery. The place where the Romans first entered this island was somewhere near Deal, and the time fifty-five years before the birth of Christ.
The Britons, who defended their country with so much resolution in the engagement, immediately after it lost all their spirit. They had laid no regular plan, for their defence. Upon their first failure they seamed to have no resources left. On the slightest loss they betook themselves to treaty and submission; upon the least appearance in their favor they were as ready to resume their arms, without any regard to their former engagements: a conduct which demonstrates that our British ancestors had no regular polity with a standing coercive power. The ambassadors which they sent to Cæsar laid all the blame of a war carried on by great armies upon the rashness of their young men, and they declared that the ruling people had no share in these hostilities. This is exactly the excuse which the savages of America, who have no regular government, make at this day upon the like occasions; but it would be a strange apology from one of the modern states of Europe that had employed armies against another. Cæsar reprimanded them for the inconstancy of their behavior, and ordered them to bring hostages to secure their fidelity, together with provisions for his army. But whilst the Britons were engaged in the treaty, and on that account had free access to the Roman camp, they easily observed that the army of the invaders was neither numerous nor well provided; and having about the same time received intelligence that the Roman fleet had suffered in a storm, they again changed their measures, and came to a resolution of renewing the war. Some prosperous actions against the Roman foraging parties inspired them with great confidence. They were betrayed by their success into a general action in the open field. Here the disciplined troops obtained an easy and complete victory; and the Britons were taught the error of their conduct at the expense of a terrible slaughter.
Twice defeated, they had recourse once more to submission. Cæsar, who found the winter approaching, provisions scarce, and his fleet not fit to contend with that rough and tempestuous sea in a winter voyage, hearkened to their proposals, exacting double the number of the former hostages. He then set sail with his whole army.
In this first expedition into Britain, Cæsar did not make, nor indeed could he expect, any considerable advantage. He acquired a knowledge of the sea-coast, and of the country contiguous to it; and he became acquainted with the force, the manner of fighting, and the military character of the people. To compass these purposes he did not think a part of the summer ill-bestowed. But early in the next he prepared to make a more effective use of the experience he had gained. He embarked again at the same port, but with a more numerous army. The Britons, on their part, had prepared more regularly for their defence in this than the former year. Several of those states which were nearest and most exposed to the danger had, during Cæsar's absence, combined for their common safety, and chosen Cassibelan, a chief of power and reputation, for the leader of their union. They seemed resolved to dispute the landing of the Romans with their former intrepidity. But when they beheld the sea covered, as far as the eye could reach, with the multitude of the enemy's ships, (for they were eight hundred sail,) they despaired of defending the coast, they retired into the woods' and fastnesses, and Cæsar landed his army without opposition.
The Britons now saw the necessity of altering their former method of war. They no longer, therefore, opposed the Romans in the open field; they formed frequent ambuscades; they divided themselves into light flying parties, and continually harassed the enemy on his march. This plan, though in their circumstances the most judicious, was attended with no great success. Cæsar forced some of their strongest intrenchments, and then carried the war directly into the territories of Cassibelan.
The only fordable passage which he could find over the Thames was defended by a row of palisadoes which lined the opposite bank; another row of sharpened stakes stood under water along the middle of the stream. Some remains of these works long subsisted, and were to be discerned in the river[6] down almost to the present times. The Britons had made the best of the situation; but the Romans plunged into the water, tore away the stakes and palisadoes, and obtained a complete victory. The capital, or rather chief fastness, of Cassibelan was then taken, with a number of cattle, the wealth of this barbarous city. After these misfortunes the Britons were no longer in a condition to act with effect. Their ill-success in the field soon dissolved the ill-cemented union of their councils. They split into factions, and some of them chose the common enemy for their protector, insomuch that, after some feeble and desultory efforts, most of the tribes to the southward of the Thames submitted themselves to the conqueror. Cassibelan, worsted in so many encounters, and deserted by his allies, was driven at length to sue for peace. A tribute was imposed; and as the summer began to wear away, Cæsar, having finished the war to his satisfaction, embarked for Gaul.
The whole of Cæsar's conduct in these two campaigns sufficiently demonstrates that he had no intention of making an absolute conquest of any part of Britain. Is it to be believed, that, if he had formed such a design, he would have left Britain without an army, without a legion, without a single cohort, to secure his conquest, and that he should sit down contented with an empty glory and the tribute of an indigent people, without any proper means of securing a continuance of that small acquisition? This is not credible. But his conduct here, as well as in Germany, discovers his purpose in both expeditions: for by them he confirmed the Roman dominion in Gaul, he gained time to mature his designs, and he afforded his party in Rome an opportunity of promoting his interest and exaggerating his exploits, which they did in such a manner as to draw from the Senate a decree for a very remarkable acknowledgment of his services in a supplication or thanksgiving of twenty days. This attempt, not being pursued, stands single, and has little or no connection with the subsequent events.
Therefore I shall in this place, where the narrative will be the least broken, insert from the best authorities which are left, and the best conjectures which in so obscure a matter I am able to form, some account of the first peopling of this island, the manners of its inhabitants, their art of war, their religious and civil discipline. These are matters not only worthy of attention as containing a very remarkable piece of antiquity, but as not wholly unnecessary towards comprehending the great change made in all these points, when the Roman conquest came afterwards to be completed.