infantry/panzer division and unit info

[jas]

can anyone give any info on these units/divisions?

1. schwere Kompanie Schützen Regiment 4, 8. schwere Kompanie Panzer Grenadier Regiment 4 -subordinated to 6. Panzer Division
Geschütz Ersatz Kompanie für Panzer Grenadiere 57, Location: Wuppertal


dog-tag:49-MG (machine-gun) Kp (company) 8 - IR30 (infantry regiment 30)

units: per report dated Nov 16,1939 8th MG Co IR30
per report dated Nov 12,1940 8th MG Co IR30 (motorized)

allocation: 18th InfDiv from Nov, 1940 18th InfDiv (motorized)

8th MG Co, InfRegiment 448; allocated to 137th InfDiv