Trebonius' retreat further accelerated the complete collapse of the already crumbling left flank formation.
...
Although Anthony was young, his experience in warfare was considerable, having fought in Syria, Egypt, Gaul, and Greece, and having confronted infantry from the major Mediterranean powers. He always believed: Greek heavy infantry, though disciplined and heavily armored, feared close-quarters combat; once their formation was disrupted, they were like lambs to the slaughter.
The infantry of Eastern nations such as Anxi and Egypt also had strict discipline and decent training, and fought courageously, but their armor was thin and their equipment insufficient, making them unable to withstand frontal assaults from heavy infantry.
