Archon if you want to learn how to Persian positions, I recommend this facebook group, there is much files you can watch and if you do not understand you can ask help https://www.facebook.com/groups/spartatroopcalculator/?fref=ts

Thank you for your inputs. I am a member of that facebook page already and got the below chart from their file. I followed exactly how many force to send on level 54 position = 205K. I guess I need to research more. 

From the start, Plarium never explained any internal calculations.

The idea is probably to have you immersed in an historical combat simulation rather than "playing" a maths and speadsheet "game".

Even the benefit from fortifications bonus wasn't known at all until Leonidas disclosed it recently. Even then, some people yelled at a "change", while it was only information disclosure !

Anyway, They do consider (as often written by Leonidas) thant discovering how it works is part of the game. Probably a bit like those text adventure games... Why not, after all.

They also don't forbid players to make their own statistics, discuss about their theories and share information.

So yes, this is all about guessing. They chosed to do it that way, and being their game, I guess this is their right.

http://wiki.plarium.com/index.php?title=The_Persian_Positions_Handbook

Thank you for your inputs. I am a member of that facebook page already and got the below chart from their file. I followed exactly how many force to send on level 54 position = 205K. I guess I need to research more.