[Pibwl]

One thing only:
484 SdKfz 8 FlaK 18 were already used during the Polish campaign in 9/39 - seems, that they were delivered in early 1939 (it would demand a change in formations). It had light armour of a cab and gunshield (1 hull front and sides, 1 turret front?). Crew was only 4. There is no clear info on ammunition storage overall, but there is a mention, that there was a case for 18 rounds at the back (the only storage?) [Jentz Panzertracts]