Riding School has antecedents in military traditions dating as far back as Xenophon in Ancient Greece, and particularly from the military horsemanship of the post-medieval ages when knights attempted to retain their battlefield preeminence by shedding heavy armor and learning to maneuver quickly and with great complexity on a firearms-dominated battlefield. Traditionally, Lipizzaners at the school have been trained and ridden wholly by men, although the Spanish Riding School states that there has never been an official ban on women. In October 2008, two women, Sojourner Morrell, 18-year-old from the United Kingdom and Hannah Zeitlhofer, 21-year-old from Austria, passed the entrance exam and were accepted to train as riders at the school – the first women to do so in 436 years. Methods The methods used by the Riding School are based on François Robichon de la Gueriniere. It is a common myth that the movements were developed to aid in battle; in fact, they were used to strengthen the war horse's body and mind and make him a supreme athlete, not to actually attack. All movements are based on those naturally performed by the horse when at liberty, with the exception of one-tempi changes. The stallions are taught in three stages: Remontenschule: ("forward riding") This stage begins when the horse is first brought to the Spanish Riding School as a 4-year-old. The stallion is taught to be saddled and bridled, and is started on the longe to teach him the aids, to improve his obedience, and to strengthen his muscles in preparation for a rider. Work on the longe includes transitions between the walk, trot, and canter, and changes of tempo within the gait, and lasts 2–3 months before a rider is ever placed on the animal's back. After longeing, the horse is ridden in an arena on straight lines, to teach him to respond correctly to the rider's aids while mounted. The main goals during this time are to develop free forward movement in the ordinary (not collected or extended) gaits, with correct contact and on a long rein, and to begin to cultivate straightness. Additionally, the training should have improved the animal's strength and stamina to prepare him for the next stage. Campagneschule: ("campaign school") The horse is usually ready for the second stage after a year of riding in the first stage, although this time-frame is always adjusted to the individual horse. Young stallions are always