Stephen, King of England recognised Stephen's son Eustace as Duke of Normandy in exchange for Eustace giving fealty to the French king. Stephen was less successful, however, in regaining the Argentan province along the Normandy and Anjou border, which Geoffrey had taken at the end of 1135. Stephen formed an army to retake it, but the frictions between his Flemish mercenary forces led by William of Ypres and the local Norman barons resulted in a battle between the two halves of his army. The Norman forces then deserted the King, forcing Stephen to give up his campaign. Stephen agreed to another truce with Geoffrey,
Norman conquest of England with the introduction of feudalism, castles or other changes in society, then the conquest, while important, did not represent radical reform. But the change was dramatic if measured by the elimination of the English nobility or the loss of Old English as a literary language. Nationalistic arguments have been made on both sides of the debate, with the Normans cast as either the persecutors of the English or the rescuers of the country from a decadent Anglo-Saxon nobility. Norman conquest of England The Norman Conquest of England (in Britain, often called the Norman Conquest or the Conquest) was the 11th-century