Franz Halder
Alex J. Kay writes that "the role, character and motivation of those involved both in planning—and in some cases carrying out—mass murder and in the conspiracy against Hitler deserve to be investigated more closely". He places Nebe in this category, with Franz Halder, chief of staff of the Army High Command (OKH), and Georg Thomas, head of the Defence, Economy and Armament Office in the Armed Forces High Command (OKW).