De velitatione bellica
De velitatione bellica is the conventional Latin title for the Byzantine military treatise on skirmishing and guerrilla-type border warfare, composed circa 970. Its original Greek title is (Peri Paradromēs, "On Skirmishing"). The original author is unknown but likely to have been a high-ranking army officer close to the Phokas family. The work describes tactics used previously against Muslim opponents but the author notes that due to recent Byzantine successes they might "not find application in the eastern regions at the present time" but might be useful for future campaigns. The author is critical of the bureaucracy of the Constantinople-based government. Historical context In the mid-7th century, the Byzantine Empire had lost most of its lands in the East to the Arab conquests. Following the repulsion of two Arab sieges of Constantinople, the imperial capital, the situation was stabilized, and the border between Byzantium and the Muslim Caliphate was established along the Taurus Mountains defining the eastern edge of Asia Minor. For the next several centuries, warfare would assume the pattern of larger or smaller raids and counter-raids across this barrier. For the Arabs, these raids (razzias) were carried out as part of their religious obligation against their major infidel enemy,