The Freikorps Heydebreck saw action against the Poles in Oberschlesien, it was one of the units that captured Annaberg.

Commanders

Hans Peter von Heydebreck

Notable members

Reichstag deputy & SA-Gruppenführer Hans Peter von Heydebreck
(the ranks are the highest ranks reached in the Third Reich era)

Sources used

Nigel Jones - The birth of the Nazis: How the Freikorps blazed a trail for Hitler

Reference material on this unit

Peter von Heydebreck - Wir Wehrwölfe: Erinnerungen eines Freikorpsführers