I have noticed a few interesting command compositions of late in some of the games.This has included small central commands of seven stands in one Hellenic army I faced. This small central command comprised four Pk stands, two Wb stands and a Ps.
How do you organise your commands for Big Battle and and why?
How does this change when using an allied contingent?
Placing a weak command in the centre is rather bold and simulates an Ilipa (206 BC) tactic. Very risky, but bold.
If the majority of the army is infantry, the most common deployment is the strong centre with a cavalry wing and on the opposite wing the support for the main command. I still use this if fielding barbarian armies such as Early Germans or Dacian. Most of my allied armies for a barbarian confederation would have a similar ratio of foot to mounted so in effect an all mounted command would be thinned down.
The Roman response is to have a strong central command (including cavalry reserve) and both wings consisting of a mix of blade, some auxilia and some mounted. Even a small command of six or seven elements could slow down or frustrate an average barbarian sized command.