Doug-Thompson why do you think the cavalry archers are still effective in sieges and broken terrain? Cavalry archers often end up killing themselves if shooting in overlapping units and that is exactly what happens in sieges and broken terrain. The only effective use of archers in sieges is to put foot archers on the walls or use cavalry archers individually on the long streets leading into the city. A unit in phalanxe formation backed up by a screening unit of cavalry archers can hold a street against almost anything. The cavalry archer units shine in flat terrain in larg numbers.