The demi-human tribes need to seriously rethink their ways... I understand that there is more to it than just cultural differences, they do have different biology, but even then this doesn't mean they can't learn.
With Pina, they have a chance that may never come again, to rebuild.
It is clear that the greatest reason humans have won the "race war" here, is that as we are a very basic species, we need to be creative with what we do, the "demi"-humans do have more specialized abilities which give them advantages in certain scenarios, but... like I said, humanity won this respective "war".
But all things considered... Pina and her Roses are dealing with things well, for an army that has just been formed with varied species that deal with aggression differently, they aren't being completely cubberstomped.
I don't think Zorzal has the total advantage, but unless some of the JSDF resolve to disobey orders, Pina will need to make her army fall in line quickly, without a massive advantage of advanced weaponry, the army that is better organized will win.
Shame Zoral isn't taking direct command, because if that was the case I know Pina would have the W in the bag, but unfortunately he is smart enough to leave others the strategic command.