 Analysis of horse transports suggests 13th-century destriers were a stocky build, and no more than .Three centuries later, warhorses were not significantly bigger; the Royal Armouries used a Lithuanian Heavy Draught mare as a model for the statues displaying various 15th- and 16th-century horse armours, as her body shape was an excellent fit.Perhaps one reason for the pervasive belief that the medieval war horse had to be of draught horse type is the assumption, still held by many, that medieval armour was heavy.