[Griefbringer]

5.) Battalion weapons company (formations 239 and 240)

Historically the battalion MG platoons formed their own MG company. In this formation the battalion mortars and anti-tank guns have been bundled into the same company, while they were not actually part of the MG company. This formation also includes motorcycles that were not actually present in the infantry battalion.

I would suggest to:
a.) drop the motorcycles
b.) move the mortars and anti-tank guns under the infantry battalion HQ formation, and rename this formation as Battalion MG company

Edit: as an extra option, perhaps the battalion AT guns could be represented by the Light AT Gun class, that is already in use elsewhere in this OOB. This would help to limit the battalion to the smaller AT guns, which is what they actually used.