Question about assaults and recovery in France 40

[BluntF]

or any Panzer Campaigns for that matter

I notice that when I assault in the game, and perhaps decide to cancel the assault, the enemy gets to take free shots at me.

Does canceling an assault count as an action then?

Lastly, what method do you all use to recover fatigued units or units with low morale?

I was moving them to the rear to be near an HQ, but is there another way than rotating units out of the front line?

Thanks