<P> The destrier is the best - known war horse of the medieval era . It carried knights in battles, tournaments, and jousts . It was described by contemporary sources as the Great Horse, due to its significance . </P> <P> The word destrier is derived from the Vulgar Latin dextarius, meaning "right - sided" (the same root as dexterous and dexterity). This may refer to it being led by the squire at the knight's right side (or led by the right hand) or to the horse's gait, (possibly leading with the right). </P> <P> While highly prized by knights and men - at - arms, the destrier was not very common . Most knights and mounted men - at - arms rode other war horses, such as coursers and rounceys . These three types of horse were often referred to generically as chargers . </P>

What breed of horse is in war horse