So ziehn wir unter fremder Fahne - Song of the Freikorps.

The Freikorps were a denomination of a series of anti communist militias in Weimar era Germany, responsible for crushing the 1919 communist rebellion in Bavaria.

The channels were I took most of the footage were deleted, however one of the videos was named "The Freikorps enter munich, 1919"
My deviantart https://www.deviantart.com/gukpard