Eagle

The last one looks interesting.

Errgghh nasty!

Well, it is true that the Pila do bend after hitting a target but not all will hit leaving some intact to be thrown back. If the bent ones were thrown back I don't suppose that there was great accuracy with them.

If you signed up for military duty at 17 you are not going to be married at that age, most men did sign up at this age I believe and between wars they would return to their father's farms and eventully their own with their families etc. Until the state took control of their farms and made slaves work their fields leaving the whole family homeless.

Etruscan blades?

What a tragic fall from history.

Well, the Roman style of warfare came after the Phalanx as the Romans could use their speed and mobility to break up the Hellenes. Over flat terrain the Roman would win all day long as it has the space to manouvre but if they were faced with the phalanx defending a bottle neck then the phalanx' longer reach would win.