In 1071 the Seljuk Turks, who practiced this religion, defeated the Byzantine Army at the Battle of Manzikert
The Rise of the Seljuk Turks: The Religious Conversion to Islam The ... have 
been found that give detailed instructions in theory and practice, which were... [DOC] [TLE] The Rise of the Turks and the Ottoman Empire [PAR] In 1071 Alp Arslan routed the Byzantine army at Manzikert near Lake Van, ... 
Armenia had been annexed by the Byzantine Empire in 1045, but religious ...