venividivici wrote:I always assumed Later Tercio's were these shallower formations which brought more muskets to bear in the front, or are they something different in Pike and Shot ?
"Later Tercio" is used in the game as a technical term for the later stage of Spanish tercio development
before they adopted the shallower Dutch formation. (Once they did so, their units, though still called tercios, do not qualify as "Later Tercios" for game purposes).
For example, see this illustration of the Battle of Nieuwpoort:
The Dutch units (on the left) are in the new shallower formation developed by Maurice of Nassau, the Spanish in the more traditional deeper formation that we term "Later Tercios". Of course the depiction does not show the actual number of ranks (the Dutch Battalion formation was actually 10 ranks deep), but it can be seen that the Spanish units are 50% deeper than the Dutch units.
The shallower formation (as represented in the game by Maurikian infantry battalions and standard Pike and Shot battalions)
is vulnerable to flank attacks, as such units were significantly more vulnerable to flank attacks than the earlier deeper units.