The Reichswehr-Brigade 20 Allenstein of the Vorläufige Reichswehr was formed in June 1919 from the Freikorps unit 37. Freiwilligen Infanterie-Division.

It merged with Reichswehr-Brigade 41 in February 1920 into Reichswehr-Brigade 20 of the Übergangsheer.

It was used to form the 1. Division in October 1920.

Commanders

Generalleutnant Walter von Eberhardt (6 Mar 1919 - 16 May 1920)
Generalleutnant Carl Buchholtz (16 May 1920 - 30 Sep 1920)

Wehrkreis

I

Order of battle (Vorläufige Reichswehr)

Reichswehr-Infanterie-Regiment GFM von Hindenburg Nr 39
Reichswehr-Schützen-Regiment 40
Reichswehr-Jäger-Btl 20
Reichswehr-Kavallerie-Regiment 20
leichtes Reichswehr-Artillerie-Regiment 20
Volkswehr-Btl Allenstein

Order of battle (Feb 1920, Übergangsheer)

Reichswehr-Infanterie-Regiment 39
Reichswehr-Infanterie-Regiment 40
Reichswehr-Infanterie-Regiment 120
Reichswehr-Kavallerie-Regiment 20
leichtes Reichswehr-Artillerie-Regiment 20
Reichswehr-Pionier-Btl 20

Order of battle (May 1920, Übergangsheer)

Reichswehr-Infanterie-Regiment 39
Reichswehr-Infanterie-Regiment 40
Reichswehr-Artillerie-Regiment 20

Sources used

Andris J. Kursietis - Between Kaiser and Führer: The history of the German Army 1919-1933
Georg Tessin - Deutsche Verbände und Truppen 1918-1939

Reference material on this unit

- None known at this time -