Gang's Walls Armed for Siege

From C4.17, Afrasiab Writes to the Faghfoor. It illustrates C4.17.9–16:

C4.17.9
He set his catapults along the wall,And armed the towers to repel them all.
C4.17.10
He bade magicians lift great stones on high,And on the ramparts set their huge supply.
C4.17.11
He summoned Roman experts for the fight,And stationed troops along the rampart height.
C4.17.12
The shrewd Jathaliq raised along the wallBallistae, catapults that towered tall.
C4.17.13
Crossbows and shields of rhinoceros hide,Helms, jowshans, filled the towers on each side.
C4.17.14
He made his smiths toil hard; from steel they madeGreat claws, along the walls in strength arrayed.
C4.17.15
They fixed the claws to lengthy spears, to haulWhoever dared to scale the city wall.
C4.17.16
Those claws would seize a man who climbed too high;Or from the fortress he must turn and fly.