CR,
You may have a data corruption issue.
US Army divisions were not equipped with 20mm Oerlikons. I looked at the US 7th Infantry Division in the editor. In scenario #1 the starting division, its TOE and its TOE upgrade all have device 1126 (0.5in M2HB AAMG x4) -- four "Ma Deuce" Browning .50 caliber machine guns on anti-aircraft mounts. Device 1126 does not upgrade to any other device.
Device 1131 (the 20mm Mk4 Oerlikon) also does not upgrade to any other device. So if a brigade of the 7th Infantry got sticky fingers and somehow acquired a batch of Oerlikons, they are not likely to change back to Ma Deuces. (EDIT: although the "**" on the screen suggests that they are trying)
OT: As an old cavalryman, your avatar is my all-time favorite Bill Maudlin cartoon. I understand that it was his favorite, too.
ORIGINAL: crsutton
I have the three brigades in Calcutta and all seem to have the latest squads and devices, yet they will not combine. I have not moved the AT or artillery unit in.
In addition I have a regiment of a US division that does not want to seem to upgrade to the 5.0 call mg from the 20mm gun. Plenty of supply and devices. The other two regiments seem to be OK. Can this be a random event or should it upgrade? Been about a week now.
See photo.