Chateau Gaillard had utilized the last of the newly built, huge great towers, and Rochester had depended on its early twelfth-century tower. During t… - Marilyn Stokstad

Before we continue our story we must stop to ask, “What is a castle?” Once a castle was defined simply as the fortified and self-sufficient dwelling of an individual feudal lord. Today we know that castles had many functions, both practical and symbolic. The castle was a new ar chitectural form—part fortress, part residence, part statehouse, part the atrical stage. Furthermore, every castle was different, depending on the wealth of the builder, the reason for the castle (control of territory, bor der, coastlines), the local geography (availability of naturally defensible sites), the knowledge of the master builder or patron, the available ma terials, the degree of urgency (speed), and finally the building traditions of the region (the techniques the workmen knew and used). In short, there is no such thing as a typical castle; a castle was a very special build ing whose form and function answered the needs of people living in Eu rope from the eleventh through the fifteenth century.

As they captured each territory, William and his men secured their camps with simple earth and timber defenses characteristic of northern Europe (...). These wooden structures have disintegrated, but sometimes their earthen mounds survive as rolling hills or picturesque elements in the landscape. Timber castles were especially useful to a warrior king like William the Conqueror who moved rapidly to bring new territories under control. The earth and timber castles could be built quickly, since the newly moved earth did not have to support great weight. Such structures were also relatively cheap because they required no specialized masons and expensive stone. Since the timber building tradition was widespread both in the British Isles and on the continent, the carpenters knew the building techniques. These castles were essentially towers and stockades; they provided garrison headquarters as well as residences.

Never as neat or well organized as many descriptions suggest, in essence feudalism involved the exchange of grants of land for military and political service, sealed by personal oaths between the lord and the vassal. The castle has been called the perfect architectural expression of the European feudal age.