If you play vanilla SF or the FTM then Hungary ,Romania and Slovakia chronically suffer from the lack of officers due to expeditionary forces rules changes since the game creation.
My 1944 MOD deals with this issue. However, you should not expect those countries to do much, after all the Soviets went through Romanians, Hungarian and Italian defences in the Stalingrad operation as if they were not there.
Yes, but that was just as much the Germans fault for relying to much on the already thin lines on their flanks, they had no armor in reserve to counter any russian attacks. And the Exp had almost no heavy weapons at the time. Although 1944 was a far different story.