The Fifth Battle of Mengedda was the first decisive battle fought between the First Holy War and the Kianene, in 4111. Plagued with organizational problems and dissension under its commanders, the First Holy War, under the nominal command of Prince Coithus Saubon, was caught by Skauras ab Nalajan and his Kianene host on the Mengedda Plains with only half of its available strength. From morning to late afternoon, the Inrithi managed to beat back innumerable Kianene charges. When the remainder of the First Holy War arrived on the Fanim flank, the will of the Kianene broke and they were routed.