How would I go about modding triarii to be the phalanx

[scannerfish]

Though so there using there spear as there weapon for both phalanx and regular fighting , also how do I prevent it so they're not sarissas/long spears like the greeks , macedonians ect.

[DimeBagHo]

There's no way to do that. If you add the phalanx ability then the primary weapon will automatically be converted to a pike. Getting them to use spears for their secondary weapon requires changing the model. For that you need 3DMax, which is expensive.

[Ceki]

Personally, I think that turning triarii into hoplite would be too much... Play with greeks!

[Zarax]

You could use the short_pike settings but then it's quite buggy and infantry becomes vulnerable to charges...