Question: A former officer of what was a Lieutenant General is notable for being present in the conference room when the 20 July plot bomb exploded in 1944 along with a German general and war criminal during World War II, who served as the Chief of the Operations Staff of the Armed Forces High Command ?
Sentence (from "Oberkommando des Heeres"): From 1938 OKH was together with OKL "Oberkommando der Luftwaffe", Supreme High Command of the Air Force and OKM "Oberkommando der Marine", Supreme High Command of the Navy, formally subordinated to the OKW "Oberkommando der Wehrmacht", Supreme High Command of all Armed Forces (with exception of the Waffen-SS).
Relevant evidence: No