Holocaust By kameron.casey Jan 30, 1933 Holocaust Begins The Holocaust begins when Adolf Hitler is appointed chancellor. Mar 21, 1933 Enabling Act Mar 22, 1933 Dachau Concentration Camp Opens Jul 15, 1936 Sachsenhausen Concentration Camp Opens Jul 15, 1937 Buchenwald Concentration Camp Opens Sep 1, 1939 Beginning of World War II: Germany invades Poland Jul 22, 1942 Treblinka Concentration Camp Opens Nov 20, 1945 Nuremburg Trials