Jewish Military Union
Before the Second World War Henryk had reached the rank of captain in the Polish Army. Soon after Nazi Germany invaded Poland and began the Holocaust, Henryk was instrumental in the founding of the Żydowski Związek Wojskowy (Jewish Military Union). Together with the rest of his family he dedicated himself to support the Jews, working through the Polish resistance (Armia Krajowa). Iwański was one of the AK members dealing with the Jews, providing them with arms, ammunition, and instructional materials smuggled through the sewers or in carts that brought lime and cement into the ghetto.