[PatG]

Here is the beta of a modified OOB 042 for blue encompassing my train work to date.

Icon0110.shp goes in the Game Data\Graphics folder
Spob042.obf goes in the Game Data\OOBs\Custom OOBs\ folder in the sub folder of your choice.
The three text files go in the Game Data\Text folder

Use the Manage OOB tool to swap in the modified OOB 42.

I suggest you set up your main force as the appropriate nation then use allies => set captured to bring in the rail units.

Limitations:
No LBMs or sounds yet
All old Blue formations are still in place (for possible AI buy ability later). I tried to clear out any stray formations in the display but I may have missed a couple.
No major additions to previously available kit - Still only German and Polish.