Amphibious warfare

[D B Campbell]

That was a smart idea on Scipio's part, but I'm surprised the lagoon was so shallow, only breast-deep at its highest. I'm not familiar with the area: were there rivers emptying into it that could have caused silting?

Actually, that's a conundrum that has spawned its own extensive specialist literature (based on Polybius' account). I can't remember what the most recent solution was!