The Evolution of the Auschwitz Killing Machine timeline

Period: Aug 15, 1940 to Jul 15, 1943

Crematoria I Operational

Crematoria I in Auschwitz I is the first Zyklon B gas chamber in Auschwitz.
Period: Jan 15, 1942 to Jul 15, 1943

Bunker 2 / "Little White House" Operational

This was the second of two farm houses that were converted at Auschwitz II Birkenau into Zyklon B gas chambers.
Period: Feb 15, 1942 to Jul 15, 1943

Bunker 1 / "Little Red House" Operational

This was the first of two farm houses that were converted at Auschwitz II Birkenau into Zyklon B gas chambers.
Period: Mar 1, 1943 to Nov 30, 1944

Crematoria II Operational

Crematoria II was a gas chamber and cremation building in Auschwitz II Birkenau.
Period: Mar 1, 1943 to Oct 7, 1944

Crematoria IV Operational

Crematoria IV was a gas chamber and cremation building in Auschwitz II Birkenau.It was destroyed in a prisoner revolt on October 7th 1944.
Period: Apr 1, 1943 to Jan 26, 1945

Crematoria V Operational

Crematoria V was a gas chamber and cremation building in Auschwitz II Birkenau.
Period: Jun 1, 1943 to Nov 30, 1944

Crematoria III Operational

Crematoria III was a gas chamber and cremation building in Auschwitz II Birkenau.
Period: May 16, 1944 to Jul 8, 1944

Bunker 2 / "Little White House" Operational Again

Crematoria I Operational