Battle of Yarmouk - Tensions in The Byzantine Army

Tensions in The Byzantine Army

Khalid's strategy of withdrawing from the occupied areas and concentrating all of his troops for a decisive battle forced the Byzantines to concentrate their five armies in response. The Byzantines had for centuries avoided engaging in large-scale decisive battles, and the concentration of their forces created logistical strains for which the empire was ill-prepared. Damascus was the closest logistical base, but Mansur, leader of Damascus, could not fully supply the massive Byzantine army that was gathered at the Yarmouk plain. Several clashes were reported with local citizens over supply requisition, as summer was at an end and there was a decline of pasturage. Greek court sources accused Vahan of treason for his disobedience to Heraclius' command not to engage in large-scale battle with Arabs. Given the massing of the Muslim armies at Yarmouk, however, Vahan had little choice but to respond in kind. Relations between the various Byzantine commanders were also fraught with tension. There was a struggle for power between Trithurios and Vahan, Jarajis, and Qanateer (Buccinator). Jabalah, the Christian Arab leader, was largely ignored, to the detriment of the Byzantines given his knowledge of the local terrain. An atmosphere of mistrust thus existed between the Greeks, Armenians, and Arabs. Longstanding ecclesiastical feuds between the Monophysite and Chalcedonian factions, while of negligible direct impact, certainly inflamed underlying tensions. The effect of these feuds was decreased coordination and planning, one of the reasons for the catastrophic Byzantine defeat.