I am so sorry that you and your daughter have gone through this.
I am also so sorry that your partner is suffering from the effects of trauma. Chase and chase and chase for the support services there for service personnel.
Has your p actually been diagnosed with PTSD? If so that usually snowballs into other help. If it hasn't push for it
Go to your MP if needs be.
My advice is that thinking meds are working isn't enough when you consider the damage another incident could cause. You will never be 100% sure but he can do a lot of work to understand his condition and how he has started to use anger inappropriately. With time and work you accurately will be able to feel safe with him again and he around you.
The other thing I would say is that meds work best when used alongside therapy and support groups etc. Meds alone are no where near enough.
Speaking from my experience - after a DV incident where there is police and then sw involvement - there is a high likelihood that he would be required to attend a number session of counselling or personal development courses to address how he came to use his anger in such a destructive manner.
Whilst he physically hasn't harmed your d he certainly has caused a great deal of emotional upheaval and, in honesty, harm. Her crying to have him returned to the home does not diminish the harm caused. ( very often even children who are horribly abused want their parents, I am not saying this is the case here but to try to show a child's PoV even when in harm's way )
Stop trying to put the relationship back together quickly - before it is fixed.
Let him get the help he needs. Take care of each other as a family. Rebuild trust. Rebuild everyone's confidence.
If you take the time and he gets help you can fix this for a happy healthy safe life together
Take care