The Reichswehr-Brigade 15 Berlin of the Vorläufige Reichswehr was formed in June 1919, primarily from the Freikorps unit Freiwilligen Brigade Reinhard.The Regiment Reichstag of the Republikanische Schutztruppe was was used to form Reichswehr-Btl Berlin. The Republikanische Schutztruppe was a militia formed by the Sozialdemokratische Partei Deutschlands (SPD, the Social Democratic Party) that, unlike the Freikorps units, was loyal to the government.
It merged with Reichswehr-Brigade 26 and Reichswehr-Brigade 34 in October 1919 into Reichswehr-Brigade 15 of the Übergangsheer.

It was used to form 3. Division in October 1920.

Commanders

Oberst Wilhelm Reinhard (6 June 1919 - 20 Sep 1919)
General der Infanterie Burghard von Oven (20 Sep 1919 - 8 Feb 1920)
General der Artillerie Hermann Rumschöttel (8 Feb 1920 - 30 Sep 1920)

Wehrkreis

III

Order of battle (Vorläufige Reichswehr)

Reichswehr-Infanterie-Regiment 29
Reichswehr-Infanterie-Regiment 30
Reichswehr-Schützen-Btl 15
Reichswehr-Btl Berlin
Reichswehr-Kavallarie-Regiment 15
leichtes Reichswehr-Artillerie-Regiment 15
schwere Reichswehr-Artillerie-Abteilung 15

Order of battle (Oct 1919, Übergangsheer)

Reichswehr-Infanterie-Regiment 29
Reichswehr-Infanterie-Regiment 30
Reichswehr-Infanterie-Regiment 115
Reichswehr-Kavallerie-Regiment 15
Reichswehr-Kavallerie-Regiment 115
leichtes Reichswehr-Artillerie-Regiment 15
Reichswehr-Pionier-Btl 15
Reichswehr-Pionier-Btl 315

Order of battle (May 1920, Übergangsheer)

Reichswehr-Infanterie-Regiment 29
Reichswehr-Infanterie-Regiment 30
Reichswehr-Infanterie-Regiment 115
Reichswehr-Artillerie-Regiment 15

Sources used

Carlos Caballero Jurado - The German Freikorps 1918-23
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 -