the best way to accomplish this was to put him at the head of a military campaign. He was eventually able to convince the caliph to go along with the plan, and al-Muntasir ordered Wasif to head to the Byzantine frontier. Having completed their preparations for the campaign, Wasif and the army departed for the Byzantine frontier in early 862. Upon arriving at the Syrian side of the frontier zone, they set up camp there in preparation for their incursions into Byzantine territory. Before Wasif had a chance to make any serious progress against the Byzantines, however, the campaign was overshadowed by events back at the capital. After a reign of only six months, al-Muntasir died around the beginning of June, of either illness or poison. Following his death, the vizir Ahmad ibn al-Khasib and a small group of senior Turkish commanders met and decided to appoint al-Musta'in as caliph in his stead. They presented their decision to the Samarran military regiments, and were eventually able to force the soldiers to swear allegiance to their candidate. The death of al-Muntasir did not immediately result in the termination of the military campaign. Wasif, upon learning of the passing of the caliph, decided that he should still persist with the operation, and led his forces into Byzantine territory. The army advanced against a Byzantine fortress called Faruriyyah in the region of Tarsus. The defenders of the fortress were defeated and the stronghold was conquered by the Muslims. Ultimately, however, the change of government in Samarra brought the expedition to a premature conclusion. The ascension of al-Musta'in could not be ignored indefinitely by Wasif; having already missed the opportunity to play a role in the selection of the new caliph, he needed to make sure his interests back in the capital were protected. As a result, he decided to abandon the Byzantine front, and by 863 he was back in Samarra. Death Al-Muntasir's reign lasted less than half a year; it ended with his death from unknown causes on Sunday, 7 June 862, at the age of 24 years (solar). There are various accounts of the illness that led to his death, including that he was bled with a poisoned lancet. Al-Tabari (p. 222-3) states that al-Muntasir is the first Abbasid whose tomb is known, that it was made public by his mother, a Greek slave-girl, and that earlier caliphs desired their tombs