Not sure if there is an elegant way to write this, but say you move a Corps which has its normal 4 movement points.
Normally, if you move this unit to use all four movement points, the unit may or may not turn dark (cannot attack or swap anymore). However, sometimes it does not. I'm not exactly sure what causes a unit to go dark vs not in all cases.
However, I believe Dazo and I discovered at least certain circumstances where you can save a movement point deliberately and consistently (doesn't seem to be up to chance).
When you move a unit into enemy territory, the national borders do not change until you click somewhere else. If you do click on the screen, the border will update. However, you have the opportunity to use your selected unit to do something first. So if you click attack with that unit before clicking anywhere else, you can use your strike, but this strike will NOT consume a movement point. If you let the border reset and then re-click on the same unit (which still has a movement point remaining) and then attack, this attack WILL consume a movement point. I believe this works whether you are moving into enemy territory or not, so long as you click attack immediately after moving (before clicking on something else), but the case where you move into enemy territory provides a visual change which marks the difference between attack + keep movement point VS attack + lose movement point.
This discrepancy is extremely useful in many cases. It can guarantee a retreat, it lets you shuffle in additional units for attack, etc. Previously I believed it was up to chance, like the RNG factor that affects battle outcomes, but that doesn't seem to be the case. I'm not sure if other players knew about this or not. But in any case it doesn't seem completely intuitive to me and I'm sure many new players don't know about this behavior which makes many useful attacks and maneuvers possible.
< Message edited by Chernobyl -- 1/20/2021 9:33:32 PM >