Various, Trial of the Major War Criminals Before the International Military Tribunal…
“ In fact, it was common practice for commanders-in-chief of army groups and of armies to be asked from time to time for estimates of the situation and for their recommendations by telephone, teletype, or wireless, as well as by personal calls. These front commanders-in-chief thus actually became advisers to the OKH in their own field, so that the positions shown in the attached chart embrace that group which was the actual advisory council of the High Command of the German Armed Forces. ”
