The Fliegerabwehr-Maschinengewehr-Abteilung/SS-VT was formed June 1939 from SS-Kradschützen-Bataillon II.
It took part in the invasion of Poland attached to Panzer-Division Kempf and following that campaign it was used to form SS-Division Verfügungstruppe (later renamed Das Reich).

Commanders

SS-Sturmbannführer Ostendorff (? June 1939 - 1 Sep 1939)

Sources used

Andrew Mollo - Uniforms of the SS: Collected Edition
Otto Weidinger - Das Reich I

Reference material on this unit

Otto Weidinger - Das Reich I