The Turks Storm the Elephant Towers

From C4.10, The Armies Meet in Battle. It illustrates C4.10.38–44:

C4.10.38
They struck the archers’ towers, citadels high,That rode on elephants beneath the sky.
C4.10.39
The beasts stood like a fortress in the way,Before the center of Iran’s array.
C4.10.40
Within their towers the archers held their place,And met the coming warriors face to face.
C4.10.41
A rain of arrows poured from tower and frame;The cries of battle rose as foemen came.
C4.10.42
The spearmen and the elephants came on,With countless warriors from the center drawn.
C4.10.43
Two farsang off, Afrasiab surveyedThe towered elephants, their ranks displayed.
C4.10.44
He brought his own huge elephants ahead;The world grew dark; the last of light had fled.