Quote Originally Posted by BeeSting
You mean they can't angle their spears?
I think they keep them level with respect to gravity. Someone noticed that cav could charge down a slope and completely ignore (go over) the kill zone for a phalanx.

.... found the original...
https://forums.totalwar.org/vb/showthread.php?t=43253

I wonder if the phalanx kill box size is moddable...