[Rottler]

Hello Edward,

there were Industrieschutz-Staffeln (ISSt) and Industrieschutz-Schwärme (ISSchw).
In JFV 10/III are listed the industrial protection units of 1943:
ISSt Focke-Wulf Bremen (formed Oct 1942)
ISSchw Focke-Wulf Sorau (formed Nov 1943)
ISSchw Focke-Wulf Marienburg (formed Oct 1943)
ISSchw Arado Tutow (formed Oct 1943)
ISSchw Messerschmitt Augsburg (formed summer 1943)
ISSt Messerschmitt Regensburg (formed 13 Jan 1943)
ISSchw Fieseler Kassel (formed July 1943)
ISSchw AGO Oschersleben (formed autumn 1943)
ISSt Wiener Neustädter Flugzeugwerke WNF (formed April 1943)
ISSchw Anklam/Flugzeugschleuse Luftflotte 6 (formed Autumn 1943)
ISSchw Insterburg/Flugzeugschleuse Luftflotte 1 (formed autumn 1943)
ISSchw Aspern/Flugzeugschleuse Luftflotte 4 (formned autumn 1943)
ISSchw Neumünster/Bf 109 Reparaturwerk (formed autumn 1943).
Besides existed the Einsatzstaffel/Jagdstaffel Erla Leipzig (formed Dec 1943) and the Alarmstaffel Erla Antwerpen (formed May 1943).

The industrial protection units were disbanded in spring 1944 because of the Allied air-superiority.

Details in
JFV 5/I (Werkschutzstaffeln in 1939/40)
JFV 10/III (Industrieschutzverbände 1943)
Jet & Prop 2/2006 (article "Die Industrieschutzstaffeln von Focke-Wulf")
Peter Schmoll "Die Messerschmitt-Werke im Zweiten Weltkrieg"

By the way there was only one air victory of ISSt Regensburg: 17 Aug 1943, Fw Mrotzek, B-17 (see post #2).

Regards
Leo