Thousands of Jews lived in the towns of Dęblin and in central Poland before World War II; Irena was the site of the Polish Air Force Academy from 1927. In September 1939, the town was captured during the German invasion of Poland and the persecution of Jews began with drafts into forced labor and the establishment of a Judenrat ("Jewish Council"). A ghetto was established in Irena in November 1940. It initially consisted of six streets and was an open ghetto (the Jews were not allowed to leave without permission, but non-Jews could enter). Many ghetto inhabitants worked on labor projects for Dęblin Fortress (a German Army base), the railway, and the Luftwaffe. Beginning in May 1941, Jews were sent to labor camps around Dęblin from the Opole and Warsaw ghettos. Conditions in the ghetto wor