I forgot to explain this more to people.

For an apropriate classical phalanx spear shieldwall in EB with units that use classical phalanx (Baktrioi Agema, Hypaspistai, Solduros, Arveni Arjos, Rycalawre, Kuarothoroi, Heruskoz-Swaiut and Frameharjoz) you have to do 3 things:

1)Alt-attack to change weapons from swords to spears
2)Activate Guard Mode to make them hold formation
3)Activate Loose Formation button - it is makes (for only these units) a tighter formation that is ideal to use with spear and Guard Mode.

Sorry for not talking about this sooner but I forgot to make a guide for this...