In what became known as the Wola massacre, "Kaminski" and "Dirlewanger" personnel indiscriminately massacred Polish combatants along with civilian men, women and children, in the Wola District of Warsaw. Up to 40,000 civilians were murdered in Wola in less than two weeks of August, including all hospital patients and staff.&lt;ref name="Nowak/Kuźniak"&gt;&lt;/ref&gt; Many otherwise unknown crimes committed by "Dirlewanger" at Wola were later revealed by Mathias Schenck, a Belgian national who was serving in the area as a German Army sapper. Regarding an incident in which 500 small children were murdered, Schenck stated: