Has anyone come up with a good one? There is the one in this site, but i am not sure if it can work in TW.
http://www.roman-empire.net/army/tactics.html
It is almost all cavalry. I don't see how you could fight a balanced catholic army, for example, though without many casualties.
The one i use most is like this
HA-------------------------------------------------------HA
---2XByzCav------------------------------------2XByzCav--
------------2XHC--------------------------2XHC------------
-----------------5XByzantine-------Infantry-----------------
--------------------4XGuard------Archer--------------------
--------------------------Varangians------------------------