Just to confuse the issue (maybe I'm just confused) as far as I understand training size and squad size aren't the same.Percentage of Squad Size, so that would include Shrewdy Shrrooms Squad Size, too?
1xL39Armory (560) + L30SS (1,560) + L30DB (3,180)= 5,300. More than enough.
1xL39Armory (560) + L30SS (1,560) + L21DB (2,385) = 4,505. Just right. In 1*28 + 28 + 20 = 76 squares, saving 148 squares, 66.1%., 51 Ancient Wonder Levels.
If that's correct, then most efficient in squares, balanced by More AW Levels.
I remember someone asking for training size to be expressed as a percentage of squad (number of troops heading into battle) size.
Shrooms increases training size related to number of armoury levels.
Bulwark adds a percentage of squad size which is greater than the training size. I've just done a squad size research so have missed this boat but maybe someone with a bulwark can check their training size before and after completing the research.
I need a beer....