As written, the Phalanx Fighting feat works with a light weapon and a heavy shield. Also, Hoplites' shields were not tower shields (neither was the Roman legionnaries' shield, the Scutum). See the link to Hoplites.
Red Hand of Doom Rise of the Runelords Fiendlord Base Class (WIP, PEACH) Elementalist Base Class (WIP, PEACH) Awesome Ulitharid avatar by the gifted Ceika. Thank you!