On July 1, 1946, Counsellor Smirnov, Russian prosecutor, cross examined Colonel Friedrich Ahrens, the commanding officer of Signal Regiment 537. On direct exam by Dr. Stahmer, he said that during 1942 hsi soldiers state that shootings were supposed to have taken place in the Katyn Forest. Upon cross, Ahrens said he had not been there during Sept and October 1941. He had seen the graves in 1943 and the graves had been open. He never prepared a report.

Produced by US Army Signal Corps 1945-1956, housed in National Archives and Records Administration (NARA). Digitized and provided by The United States Holocaust Memorial Museum; Steven Spielberg Film and Video Archive.