Erich Georg Heinrich Isselhorst was born in Saint-Avold, Lorraine, in 1906, which was then part of the German Empire but is now part of France. He was educated in Dortmund, Recklinghausen and Düsseldorf, where he graduated in 1925. He was employed in a rubber factory before studying law from 1927 to 1930 in Cologne and Munich. Isselhorst received his doctoral degree in law in 1931, once more returned to Düsseldorf, and joined the Nazi Party in August 1932.
SS career
Isselhorst joined the Sturmabteilung, in May 1933, and the SS in October 1934. He was admitted to the Sicherheitsdienst in July 1937 and permanently employed in the Gestapo in Berlin from December 1935, forward. From February 1936 to April 1938 he was head of the Gestapo in Cologne, after which he was transferred to Klagenfurt, Austria, which had recently been annexed by Nazi Germany. During this time, he also served as a reservist in the Wehrmacht, taking part in training with an anti-aircraft regiment. From December 1939 to November 1942, Isselhorst served as the head of the Gestapo in Munich. In January 1942 he was severely reprimanded for behaviour unbecoming of a member of the SS. From January to October 1942, Isselhorst was transferred to the Reichskommissariat Ostland in occupied Belarus, where he headed a department of the Sicherheitspolizei. In September and October 1942 he led Einsatzkommando 8, a sub-group of the mobile killing unit known as Einsatzgruppe B, which was tasked with murdering Jews. From October 1942 to June 1943 he led Einsatzkommando 1 of the Einsatzgruppe A, now in the Baltic states, carrying out the murder of Jews there. From June to October 1943 he was head of the SiPo in Minsk while also leading Sonderkommandos 1b of the Einsatzgruppe A. Isselhorst returned to Germany in October 1943 and his old role in Munich before being transferred to Strasbourg in December, where he headed the SiPo there. At the same time he also headed the SiPo in Stuttgart.
Murder of captured SAS soldiers
While posted in Strasbourg in the second half of 1944, Isselhorst was part of the Operation Waldfest, a scorched earth operation in which villages in the Vosges mountains were destroyed to eliminate shelter for Allied troops for the upcoming winter, with the inhabitants deported as forced labour or to Nazi concentration camps. In a coordinated operation by the Wehrmacht and SS, villages were raided. There Maquis French resistance fighters, and 39 British paratroopers of the Special Air Service, part of the Operation Loyton were executed; the latter as part of Hitler's Commando Order. Isselhorst ordered the execution of the captured British SAS members, as well as a number of French civilians, three French priests and four US airmen. The prisoners were taken over the Rhine river on trucks to Gaggenau on 21 November 1944. The leader of the execution commando, Karl Beck, thought it unwise to leave mass graves of shot allied soldiers in an area so close to the front line. The prisoners were initially kept in a local jail, but then on or shortly after 25 November, taken to a local forest and shot in the head in a bomb crater. One prisoner attempted to escape, but was killed. Apart from Isselhorst, his second in command, Wilhelm Schneider was also executed for the war crime in January 1947. Beck initially escaped punishment, but was sentenced to death in the 1950s. In January 1945 Isselhorst was transferred once more, now to the Reich Main Security Office in Berlin, where he remained until April. Isselhorst was arrested by US forces on 12 May 1945 in southern Bavaria.
Execution
Isselhorst was sentenced to death by a British military tribunal in June 1946 for the murder of British POWs, but handed over to the French. He was once more sentenced to death in May 1947, now by a French military tribunal, and executed in Strasbourg on 23 February 1948.
