Re: Sudden defensive missions
 

True. My fear was that since I had lost something like half of my force in the previous battle, fighting it would be just suicidal.

Re: Sudden defensive missions
 

If a proper defense is not possible I would have put all the lower mobility/shorter range units on the map edge for a quick exit off the map. Higher mobility units with good long range weapons would be used for a screening delay defense. Hit the advancing forces at long range and pull back to the next firing position till they exit the map.

Re: Sudden defensive missions
 

Wouldn't work for this campaign.
I thought about it too.
The enemy has the clear advantage in viewing range and any kills from my forces would most likely mean the end of my units too.
The video will be up tomorrow, you can have a look if you want.