July 23, 1942
Gassing Operations Begin at Treblinka
SS Special Detachment Treblinka begins gassing operations at the Treblinka killing center.
Between July 1942 and November 1943, the SS special detachment at Treblinka murders an estimated 925,000 Jews and an unknown number of Poles, Roma (Gypsies), and Soviet prisoners of war in Treblinka 2.