[Larry deZeng]

Your (1) is perfect.

Your (2) needs further explanation. It is correct as stated, but le.Flak-Abt.(ETr.) designated as such did not come into existence until the second half of 1943 or early 1944. Prior to that, le.Flak could be found on flatcars mixed in with freight and passenger trains, but the individual guns and crews could belong to units of the Luftwaffen-Flak, Heeres-Flak-Btle., Heeres-Zugwach-Abteilungen, Heeres-Transport-Begleit-Btle., Heeres-Transport-Sicherungs-Btle. or Heeres-Eisenbahn-Sicherungs-Btle. In other words, 2.0 cm Flak guns and trained crews could have been provided by a variety of different units. But after mid-1943, this job was increasingly shifted to the Luftwaffe le.Flak-Abt.(ETr.) units.