The Duchy of Normandy came into being in 911 when Rollo the Viking became the first Duke. The Norsemen adopted the use of cavalry and in 1066, invaded England resulting in Duke William the Bastard becoming King William the Conqueror. The Normans also founded kingdoms in Sicily and Southern Italy.
This army pack made by the maters of 10mm wargaming, Pendraken, conatins 150 infantry and 30 cavalry to let you begin fighting with this fearsome force.
Note that this pack can also be used for both Feudal England & France and the early Crusade period, up to about 1200 when armour began to change from this design.