25mm – Longbow, Arquebus, Musket, Pike: 4 figs on 60x20 base
25mm – Halberd, S&B, Crossbow – 3 figs on 60x20mm base
25mm – Skirmisher, Warband 2 figs SK 3 figs Warband on 60x30mm base.
Gendarmes 3 figs on 60x40mm base
Cavalry 2 figs on 60x40mm base
Leaders 1 fig on 60x20mm
Artillery 60x60mm base
So 60x20mm bases, maybe some 60x30 (Highlanders or some Ottomans) and cav on 60x40mm Art on 60x60mm.
To visualize the way regiments are formed you kinda need the book, but:
For ECW Royalist Regiment 3 bases of Musket and 3 bases of Pike
For ECW Parliament 4 bases of Pike and 4 bases of Musket
For TYW Late Imperialist same as Parliament.
For Early Imperial a very big Tercio of 8 bases of Pike surrounded by 8 bases of Musket
For Triple Size Tercio 10 musket and 12 pike
Swedish Foot 3 Pike and 4 Musket
Warband 4 bases of 3 figs.
Skirmish = 1 base of 2 figs.
Muskets etc. (infantry on their own) 2 bases.
Gendarmes 2 bases of 3 figs.
All other cav 4 bases of 2 figs
The rules do state that should work whatever basing convention – just make sure both armies are the same.
The number of figs is important r/t casualties and to some extent the shape and depth of the formation.
A good set of rules – don't know how they work for later eras than the Renaissance. I like the way they manage push of pike and using halberds and arquebusiers.
Designed more for 15's, I have a bunch of old Minifigs and Hinchliffes so can afford to rebase them to the above standards!