So heres something I found out a while ago and I don’t know if its common knowledge but its extremely helpful when trying to survive the early game especially on hard mode.
When your soldiers attack they have a cooldown before they can do another strike, however by ordering your soldier to attack the enemy right after he finished his attack he will strike again immediately.
This way you can do a lot more dps and will lose much less HP and can survive longer without a herbalist.
Not sure if this is intended or not, perhaps a Dev can give some insight on if this is a mechanic or not.
Here it is without the cancel:
And here with the canceling: