Completely ahistorical- just mod, play and learn, H2H.
I have added several Italian divisions with HQ's to the German side. Made sure that they were on a map location / zero delay / withdraw turn zero.
All new units present within the editor, however when I load to play (Russians first) the new units are not on map or in the German reserve TB.
I am no doubt missing some basic step. It has occurred to me to edit and start with the German turn first.
Time to check in with The Smart Guys(tm)...

What an awesome game.
Edit- once edited and Germans first, all units present. Would still be interested in the "why."
Edit 2- resolved air execution and transitioned into movement phase. All added Italian units disappeared. Not sure why.
Thank You all in advance.
Cricket Mac