Most realistic movie depictions of ancient warfare

[Calvo]

The problem with the Spartacus depiction of battle cited above is that that kind of regimented warfare was a product of the mechanisation of warfare, as rifles had to be operated in a synchronised manner to be effective. Big regular rectangles moving around the battlefield Total War-style is really even less realistic than the mile-long line of men hitting each other's shields with their swords.

http://en.wikipedia.org/wiki/Roman_infan...for_combat

Why would it be unrealistic? The Romans certainly did deploy their cohorts in rectangular formation, as shown in this article:
http://en.wikipedia.org/wiki/Roman_infan...for_combat