Spoiler alert: they did not hold the line.

Those are not legionaries from the Second Punic War, and there weren’t any elephants at the battle of Cannae (I think - it don’t go well in any case). I call shenanigans

used to own a Mitsubishi Montero, can confirm, handles like an elephant

There should at least be a few pilums and arrows sticking out of the elephant if it is that close to the shield wall.