I just don't see how the point of the Etruscans fighting overarm, yet were not conquerers of the world, leads to the conclusion that overarm hoplite techniques were not used or were inneffective. Pyhrrus adopted the Manipular formations into the Phalanx and don't forget elephants! but with that same logic maniples, phalanxes and elephant using militaries were ineffective because Pyhrrus of Epirote did not conquer the world.