Strife
Archer
posted 07-10-17 12:02
EST (US)
7 / 11
There's a unit cap of 1500 total, including military, civilian, and wildlife, although I've had issues where there will be a display of maybe around 190 units remaining before reaching the ca, but I would not be able to place any units down except for siege units.
Your best course of action is to spread the invasion forces over a few months with varying sizes (e.g. 300 in month 1, wait three to five months, another 300, wait, etc.) so that the defender can kill off some units before hitting the cap. The effect remains the same, or possibly result in better gameplay. The AI usually still only sends in small groups of units at a time, letting your archers mow them down if you already mass-built them.