I um, don't think the Czechs are an option are they? If they are, and I've just read things wrong, you can find more information here: [url=http://en.wikipedia.org/wiki/Czechoslovak_People%27s_Army]

EDIT: Gunther looks like he could probably provide you with more information on PACT force compositions and ranks. Took me like two hours of research to get to grips with the GDR's NVA, information was really vague on their equipment and formation.