Destrier between the Percheron and the Andalusian; and the Warlander, a cross between the Andalusian and the Friesian horse. A good destrier was expensive. 7th-century Salic law gives a price of 12 solidi as weregild, or reparational payment, for a war horse, compared to 3 solidi for a sound mare or 1 solidus for a cow. In later centuries destriers became even more expensive: the average value of each of the horses in a company of 22 knights and squires in the county of Flanders in 1297 compares to the price of seven normal coursers. The price of these destriers varied
Warfare in Medieval Poland not probably have happened so widely and so quickly without the Polish–Lithuanian union. In the Grand Duchy of Lithuania, especially in Rus', the eastern style was adopted much earlier. The most visible armour transformation in medieval times was that of the helmet, which changed its shape from a conical shape into a great helm (11th-12th century) and later to the bascinet with different shapes in following centuries. The knight was usually accompanied by one, two or more squires, the most experienced of whom (mainly from the impoverished szlachta) had to protect their master during the battle, and to hand him