Later, von Bolschwing became the representative of the SD at the German embassy in Bucharest, Romania, where he organised an anti-Jewish pogrom with the Iron Guard in 1941, in which 125 Jews were killed. He was promoted to the rank of SS-"Hauptsturmführer" (captain) on 30 January 1941. After returning to Germany in March 1941 Bolschwing pursued to a career in business, becoming a partner with the Bank voor Onroerende Zaken, an Amsterdam-based bank which played a role in the confiscation of assets belonging to Jewish citizens in the Nazi-occupied Netherlands.