A phalanx,
Usually had a round shield that covered from their knees to the brim of their shield. Leg guards to cover their lower legs and ankles. Short sword, called, erm, i dont exactly remember. 20 ft long spear equipped to all when in the phalanx battle formation. And the standard Greek helmet. Little eye slits and long wide face guards, main purpose was to strike fear into the enemy. That sounds about right, also a lightly armored chest plate, usually made of copper and then iron.
Lets see, Im going to go with the Roman Preatorian Guard.