By end of the war the German Reichsbahn used these waggons to protect their trains against air attacks. These waggons were part of standard trains. They were never part of the German Panzerzüge (tank trains)
The Flak is inside, you have to cut it off.
No moving wheels!
The waggon runs on scale N tracks.
painting in Reichsbahn typical colours
Flakwagen I 144 001 (rep)