Halted at the Flooded Trench

From E4.2, Anooshirvan and the Shoemaker. It illustrates E4.2.10–15:

E4.2.10
The Romans dug a trench to block the way,And flooded it to keep the Shah at bay.
E4.2.11
They barred the Shah’s advance with ditch and flood;His army halted there in steel and blood.
E4.2.12
A long time passed with neither side relieved;The troops required more funds than they received.
E4.2.13
He called his battle-captains to his side,And weighed the field’s condition far and wide.
E4.2.14
He said, “This brings us toil and loss; no wayAcross the flooded trench appears today.
E4.2.15
The troops need coin, food, steeds, and jowshans too,And Roman helms, if we would see this through.”