Who helped Hans-Ulrich von Oertzen develop Operation Valkyrie?
Hans-Ulrich von Oertzen Born in Berlin to an aristocratic family, Oertzen followed his father into the army and trained as a general staff officer. During the Second World War he was promoted to Major and by 1943 was serving in Army Group Centre under Generalmajor Henning von Tresckow, who was one of the leading members of the resistance. He then helped Claus von Stauffenberg to develop Operation Valkyrie. On 26 March 1944, he married Ingrid von Oertzen Langenn, and a selection of 240 letters he wrote to her from 1942 to 1944 were recently published in book form in Germany.
Hans-Joachim Mack Hans-Joachim Mack (30 March 1928 – 6 April 2008) was a German general of the Bundeswehr and Deputy Supreme Allied Commander Europe (DSACEUR) from 1984 to 1987.