Hittite/ Carthaginian

   This combination is good but it needs to have centurions assume a role they often have trouble performing, acting like legions.  Siege is not a problem, because both Helepolises and Heavy Catapults can be built.  Towers can claim land.  Armored Elephants can blast through towers and legions.

    This is a good combination because the deadly unit for killing Carthaginian, Helepolises, are smashed by Hittite's Heavy Catapults with ease.  So basically, the powerful Carthage player can march his high hitpoint units and smash buildings while the Hittite provides a backbone if needed.