The Slovaks are borderline, but the Hungarians and Rumanians morale needs to be in the 70s to give them any chance of surviving an attack, and we have seen some players train them up to this level.
It will NOT happen anymore, for games started with v 1.03 Beta 3, and beyond, due to the morale changes. Those are things of the past.
Let me rephrase that...
It won't happen, unless you keep them away from the frontlines, in good supply, for a 100 turns, or so. They won't be able to get that high in combat anymore. Unless, of course, you're running an old version, or have grandfathered in some high morale Axis minors from a game started with the earlier versions. Training them up in combat is a fool's errand these days.
The way I understand the morale changes there's a chance a unit loses a point if it's morale is over 30 above the national morale; the Axis minors can still reach 70 ( that's 30 above their national 40 ), the problem is holding it.