 In 1867, as he approached the age of 23, Nietzsche entered his required military service and was assigned to an equestrian field artillery regiment close to Naumburg, during which time he lived at home with his mother. While attempting to leap-mount into the saddle, he suffered a serious chest injury and was put on sick leave after his chest wound refused to heal. He returned shortly thereafter to the University of Leipzig, and in November of 1868, met the composer Richard Wagner (1813–1883) at the home of Hermann Brockhaus (1806–1877), an Orientalist who was married to Wagner’s sister, Ottilie. Brockhaus was himself a specialist in Sanskrit and Persian whose publications included (1850) an edition of the Vendidad Sade—a text of the Zoroastrian religion, whose prophet was Zarathustra (Zoroaster).