Any info on Versuchsverband O.K.L. and Versuchsstelle für Höhenflüge?

[Ian Jewison]

Gents,

Anything significant with these units?

The first two are from a flying license:

2 Staffel, Versuchsverband O.K.L.
Versuchsstelle für Höhenflüge

The next two are on an Ausweis for fighter pilots......the written unit is:

II Gruppe, Versuchsverband O.K.L. The signature appears to be Major Wolfgang Heese as Gruppenkommandeur.

However it is stamped:

Verbandsführerschule d. General der Jagdflieger and bears a facsimile signature of Adolf Galland.

Thanks in advance.

Ian