lines, 14 of which exist today. However, up to 35 mare lines are recognized by various Lipizzan organizations. Traditional naming patterns are used for both stallions and mares, required by Lipizzan breed registries. Stallions traditionally are given two names, with the first being the line of the sire and the second being the name of the dam. For example, "Maestoso Austria" is a horse sired by Maestoso Trompeta out of a mare named Austria. The horse's sire line traces to the foundation sire Maestoso. The names of mares are chosen to be "complementary to the traditional Lipizzan line names" and are required to end in the letter "a". Spanish Riding School The world-famous Spanish Riding School uses highly trained Lipizzan stallions in public performances that demonstrate classical dressage movements and training. In 1572, the first Spanish riding hall was built, during the Austrian Empire, and is the oldest of its kind in the world. The Spanish Riding School, though located in Vienna, Austria, takes its name from the original Spanish heritage of its horses. In 1729, Charles VI commissioned the building of the Winter Riding School in Vienna and in 1735, the building was completed that remains the home of the Spanish Riding School today. Wartime preservation The Lipizzans endured several wartime relocations throughout their history, each of which saved the breed from extinction. The first was in March 1797 during the War of the First Coalition, when the horses were evacuated from Lipica. During the journey, 16 mares gave birth to foals. In November 1797, the horses returned to Lipica, but the stables were in ruins. They were rebuilt, but in 1805, the horses were evacuated again when Napoleon invaded Austria. They were being taken care of in Đakovo Stud. They remained away from the stud for two years, returning April 1, 1807, but then, following the Treaty of Schönbrunn in 1809, the horses were evacuated three more times during the unsettled period that followed, resulting in the loss of many horses and the destruction of the written studbooks that documented bloodlines of horses prior to 1700. The horses finally returned to Lipica for good in 1815, where they remained for the rest of the nineteenth century. The first evacuation of the twentieth century occurred in 1915 when the horses were evacuated from Lipica due to World War I and placed at Laxenburg and Kladrub. Following the war, the