I am a bit confused...Will this mod have the needed time frame to reach the apearence of Islam?
Or it will be around the 1st years before and after 311AD?
I am saying this because Roman armies changed radicaly many times after the end of that civil war.
1st Reform made by Constantine himself.
2nd reform made by Justinianus (actually by Belisarius).
3rd reform by Maurice and finally the huge reform made by Heracleius that followed and other HUGE reform after 700AD.