The Italian Army is represented and made. The Hungarian is not. Their uniforms, weapons, gear, etc, are all unique to the Hungarians. The closest thing they have to anything FH2 has is their helmet, but even that would have to be modified as it was not exactly the same as the German helmets. Plus you'd have to make Hungarian voices, which in of itself would be a challenge without any suitable voice actors.
There did, in fact, use to be work on a mini-mod by a few individuals for the Hungarian military, but that dried up and died. I have no idea if the assets are even around anymore, and they never really moved far beyond tank models and a few weapons. Point is, the FH2 dev team is small and only has a few active devs at any one point. We cannot really create a brand new entire faction out of thin air- the dev team needs to work with the assets it has on hand.