jmk1999
17
Actually, according to the subject-verb agreement rule, it is in fact “have” because it’s referring to more than one wall being defended. If they had said only one wall was being defended, it would be “has.” The only issue here is the incorrect information, not the grammar.
Granted, it’s a single action: “defending fortress walls”… soooo… not 100% on this one. You may be correct. I’d have to go back and check my grammar references.