Thanks Richard.
For the second formation, it says in the rules for pavise that separate bases should be used in front. Hence, instead of the spearmen with large shield as in the first formation, would you use small bases with pavises on them in front of the archers instead of using the spearmen figures from the first formation?
For the second formation, it says in the rules for pavise that separate bases should be used in front. Hence, instead of the spearmen with large shield as in the first formation, would you use small bases with pavises on them in front of the archers instead of using the spearmen figures from the first formation?

I put my chariots on 50mm depth due to this issue. It also distinguishs between what are actually battle group bases and that which are commander bases on 40mm square. The base sizes for 25/28mm figures are are greater depth for chariots so I don't see why they shouldn't be for 15mm figures.