From the back of the book: "While the Crusades raged in the Holy Land, Europe, too, was torn apart by war. From England's Anarchy to the slaughter of the Albigensian Crusade, kings, nobles, and clergy all vied for power and wealth. Out of this bloodshed, however, arose one of the most honoured ideals of history - the Code of Chivalry. With new troop types, historical backgrounds and accompanying maps and artwork, Oath of Fealty allows Field of Glory generals to take up arms in defence of honour, Faith and liege lord." The tenth army supplement for the Field of Glory miniatures wargame. This supplement covers Western Europe from c. 1050AD through c 1300AD. The book itself is 124 pages printed in full color with photos of miniatures and paintings from various other Osprey books used throughout. Armies included: - Feudal Catalan and Early Crown of Aragon - Early Hungarian - Taifa Andalusian - Feudal Navarrese and Aragonese - Feudal Castilian, Leonese or Portuguese - Fanatic Berber - Italo-Norman - Feudal French - Imperial German - Feudal German - Communal Italian - Papal Italian - Early Scots Isles and Highlands - Feudal Scots - Early Russian - Feudal Polish - Anglo-Norman - Later Welsh - Early Lithuanian or Samagitian - Wendish, Prussian, or Estonian - Early Medieval Frisia and other Free Cantons - Post-Viking Scandinavian - Early Plantagenet English - Later Sicilian - Early Medieval Irish - Early Anglo-Irish - Early Teutonic Knights - Mongol Invasion - Early Grenadine - Middle Plantagenet English