Declaring the English who fought against him to be traitors, the Conquerer declared their land confiscated. But he allowed those who were willing to acknowledge him to redeem their land by a payment of money. As William conquered the land of the realm, he parceled it out among the barons who fought with him so that each baron was given the holdings of an Anglo-Saxon predecessor, scattered though they were. The barons again made oaths of personal loyalty to him [fealty]. They agreed to hold the land as his vassals with future military services to him and receipt of his protection. They gave him homage by placing their hands within his and saying "I become your man for the tenement I hold of you, and I will bear you faith in life and member [limb] and earthly honor against all men". They held their land "of their lord", the King, by knight's service. The king had "enfeoffed" them [given them a fief: a source of income] with land. The theory that by right all land was the King's and that land was held by others only at his gift and in return for specified service was new to English thought. The original duration of a knight's fee until about 1100 was for his life; thereafter it was heritable. The word "knight" came to replace the word "thegn" as a person who received his position and land by fighting for the King. The exact obligation of knight's service was to furnish a fully armed horseman to serve at his own expense for forty days in the year. This service was not limited to defense of the country, but included fighting abroad. The baron led his own knights under his banner. The foot soldiers were from the fyrd or were mercenaries. Every free man was sworn to join in the defense of the king, his lands and his honor, within England and without.
The Saxon governing class was destroyed. The independent power of earls, who had been drawn from three great family houses, was curtailed. Most died or fled the country. Some men were allowed to redeem their land by money payment if they showed loyalty to the Conquerer. Well-born women crowded into nunneries to escape Norman violence. The people were deprived of their most popular leaders, who were excluded from all positions of trust and profit, especially all the clergy. The earldoms became fiefs instead of magistracies.
The Conquerer was a stern and fierce man and ruled as an autocrat by terror. Whenever the people revolted or resisted his mandates, he seized their lands or destroyed the crops and laid waste the countryside and so that they starved to death. His rule was strong, resolute, wise, and wary because he had learned to command himself as well as other men. He was not arbitrary or oppressive. The Conquerer had a strict system of policing the nation. Instead of the Anglo-Saxon self-government throughout the districts and hundreds of resident authorities in local courts, he aimed at substituting for it the absolute rule of the barons under military rule so favorable to the centralizing power of the Crown. He used secret police and spies and the terrorism this system involved. This especially curbed the minor barons and preserved the public peace.
The English people, who outnumbered the Normans by 300 to 1, were disarmed. Curfew bells were rung at 7:00 PM when everyone had to remain in their own dwellings on pain of death and all fires and candles were to be put out. This prevented any nightly gatherings, assassinations, or seditions. Order was brought to the kingdom so that no man dare kill another, no matter how great the injury he had received. The Conquerer extended the King's peace on the highways, i.e. roads on high ground, to include the whole nation. Any individual of any rank could travel from end to end of the land unharmed. Before, prudent travelers would travel only in groups of twenty.
The barons subjugated the English who were on their newly acquired land. There began a hierarchy of seisin [rightful occupation] of land so that there could be no land without its lord. Also, every lord had a superior lord with the king as the overlord or supreme landlord. One piece of land may be held by several tenures. For instance, A, holding by barons' service of the King, may enfeoff B, a church, to hold of him on the terms of praying for the souls of his ancestors, and B may enfeoff a freeman C to hold of the church by giving it a certain percentage of his crops every year. There were about 200 barons who held land directly of the King. Other fighting men were the knights, who were tenants or subtenants of a baron. Knighthood began as a reward for valor on the field of battle by the king or a noble. The value of a knight's fee was 400s. [20 pounds] per year. Altogether there were about 5000 fighting men holding land.
The essence of Norman feudalism was that the land remained under the lord, whatever the vassal might do. The lord had the duty to defend the vassals on his land. The vassal owed military service to the lord and also the service of attending the courts of the hundred and the county [formerly "shire">[, which were courts of the King, administering old customary law. They were the King's courts on the principle that a crime anywhere was a breach of the King's peace. The King's peace that had covered his residence and household had extended to places where he might travel, such as highways, rivers, bridges, churches, monasteries, markets, and towns, and then encompassed every place, replacing the general public peace. Infraction of the King's peace incurred fines to the King.
This feudal bond based on occupancy of land rather than on personal ties was uniform throughout the realm. No longer could a man choose his lord and transfer his land with him to a new lord. He held his land at the will of his lord, to be terminated anytime the lord decided to do so. A tenant could not alienate his land without permission of his lord. In later eras, tenancies would be held for the life of the tenant, and even later, for his life and those of his heirs.
This uniformity of land organization plus the new requirement that every freeman take an oath of loyalty directly to the king to assist him in preserving his lands and honor and defending him against his enemies, which oath would supersede any oath to any other man, gave the nation a new unity. The king could call men directly to the fyrd, summon them to his court, and tax them without intervention of their lords. And the people learned to look to the king for protection from abuse by their lords.
English villani, bordarii, cottarii, and servi on the land of the barons were subjugated into a condition of "villeinage" servitude and became "tied to the land" so that they could not leave the land without their lord's permission, except to go on a pilgrimage. The villeins formed a new bottom class as the population's percentage of slaves declined dramatically. They held their land of their lord, the baron. To guard against uprisings of the conquered people, the barons used villein labor to build about a hundred great stone castles, with moats and walls with towers around them, at easily defensible positions such as hilltops all over the nation.
A castle could be built only with permission of the King. A typical castle had a stone building of about four floors