Improved the 2nd epoch and had a go at the 5th, definitely gets tougher. I threw a lot of guys at it. Especially the 3rd island where I played as a super fast arms race. How are you managing on so few men Harry? That's impressive.
Also noticed that the minerals are different on each square. And to use the blueprint reader, doh.
Epoch 2 = 130
Epoch 5 = 270
Total = 400