And thus made them like broken straw eaten up.
He made them like chewed up hay
so that He made them like straw eaten (by cattle)
So He rendered them like straw eaten up
So He made them like eaten husk/chaff/leaves
And made their battle field like an empty field of stalks and straws
So He made them like the leftover devoured leaves of farms
And thus made them like broken straw, eaten up
Then (Allah made them perish) like chewed-up chaff
And thus He reduced them to rotten chaff (and in a similar way will they be ruined who would ever make an attack to destroy Ka`bah)
And made them like an empty field of stalks (of which the corn has been eaten up by cattle)