By mid-1941, the [[Ukrainian SSR]] had the largest population of Jews in Europe. The addition of the eastern provinces of Poland in late 1939 (western Ukraine after 1945), as well as the seizure of sections of Romanian territory in June 1940, led to some 2.7 million Jews living within the borders of the newly enlarged republic. About 85% lived in cities. Days after [[Operation Barbarossa]] commenced, Einsatzgruppen squads began carrying out mass shootings during the last week of June 1941.<ref>[https://encyclopedia.ushmm.org/content/en/timeline-event/holocaust/1939-1941/operation-barbarossa Operation Barbarossa | Holocaust Encyclopedia]</ref> By 1944, 1.6 million of these Jews had died at the hands of the Germans and their allies and auxiliaries. Unlike the majority of the Holocaust's later victims who died in the industrialized mass murder of the death camps, the overwhelming bulk of Ukraine's Jews died in mass shootings during the initial stages of the war. | By mid-1941, the [[Ukrainian SSR]] had the largest population of Jews in Europe. The addition of the eastern provinces of Poland in late 1939 (western Ukraine after 1945), as well as the seizure of sections of Romanian territory in June 1940, led to some 2.7 million Jews living within the borders of the newly enlarged republic. About 85% lived in cities. Days after [[Operation Barbarossa]] commenced, Einsatzgruppen squads began carrying out mass shootings during the last week of June 1941.<ref>[https://encyclopedia.ushmm.org/content/en/timeline-event/holocaust/1939-1941/operation-barbarossa Operation Barbarossa | Holocaust Encyclopedia]</ref> By 1944, 1.6 million of these Jews had died at the hands of the Germans and their allies and auxiliaries. Unlike the majority of the Holocaust's later victims who died in the industrialized mass murder of the death camps, the overwhelming bulk of Ukraine's Jews died in mass shootings during the initial stages of the war. |