Very nice.

A nice site that can be used as a basic guide for Ancient armies (both composition, and uniform/weapons) is -

//www.dbaol.com/armies.htm

Check the Hellenistic Greek, for example, or the Early Spartan. Some nice Persian pic's as well.

May be useful.

This site is also quite nice -

http://fanaticus.org/DBA/armiesofthefanatici/

Painted 15mm Ancient armies (quite a few nice Greek armies).