 However, German literary sources also refer to fine horses from Scandinavia.France also produced good war horses.Some scholars attribute this to the strong Feudal society there, but an equally probable explanation is the historic influence of the Roman horse breeding traditions preserved by the Merovingians, combined with the addition of valuable Spanish and oriental bloodstock captured in the wake of the victory of Charles Martel over the Islamic Umayyad invaders at the Battle of Tours in 732.