Together with the Interahamwe militia, which formed earlier and had more members, the Impuzamugambi was responsible for many of the deaths of Tutsis and moderate Hutus during the Rwandan Genocide of 1994.
Bersama dengan milisi Interahamwe, yang dibentuk sebelumnya dan memiliki banyak anggota, Impuzamugambi bertanggungjawab atas kematian Tutsi dan Hutu moderat selama Genosida Rwanda tahun 1994.