It is possible to merge units of different nationality

[Blubel2]

Just found out and am now left with a really strong Rumanian division... I'm reasonably sure this is not supposed to happen.

[joelmar]

What patch version do you run? I'm not even able to split a rumanian div under the current patch to begin with!

[Blubel2]

1.11.03. I can't split the Rumanian division, either. It is (and as far as I'm aware of always was) only possible for Germans and the Finns.

[joelmar]

So how were you able to merge the rumanians with the germans ? you mean merging a rumanian brigade with a german regiment?

[Blubel2]

No. I had a Rumanian and two German divisions sitting in a hex all way understrength. They were cut off in the winter and I was unable to rescue them. As I did not want next turns replacements to all go to useless destroyed units I tried to merge the two German divisions. The game however merged the German division with the Rumanian one, leeding to a Rumanian division with lots of German elements in it.

[Denniss]

Do you have a save prior to this and steps how to replicate it ?
This must have been a malfunction of the merging code as it should never ever merge units of different nations.

[Blubel2]

File attached. The pocketed German division merges with the Rumanian Guards division.

[Denniss]

A bug indeed, got this replicated with the scenario you mentioned.
Reported internally for further examination and fix.
Must be something like a missing/non-working nationality check