Oberkommando der Wehrmacht replaces Ministry of the Reichswehr
Genesis
The OKW was established by executive decree on 4 February 1938, in the aftermath of the Blomberg-Fritsch affair, which had led to the dismissal of the Commander-in-Chief of the Armed Forces and head of the Reich Ministry of War, Werner von Blomberg, as well as the Commander-in-Chief of the Army, Werner von Fritsch.
Adolf Hitler, who had been waiting for an opportunity to gain personal control over the German military, quickly took advantage of the scandal, using the powers granted to him by the Enabling Act to do so. The decree dissolved the ministry and replaced it with the OKW. The OKW was directly subordinate to Hitler in his position as Oberster Befehlshaber der Wehrmacht (transl. Supreme Commander of the Armed Forces), to the detriment of the existing military structure.
The OKW was led by Field Marshal Wilhelm Keitel as Chief of the OKW with the rank of a Reich Minister, which essentially made him the second most powerful person in the armed forces' hierarchy after Hitler. The next officer after Keitel was Lieutenant General Alfred Jodl, who served as the OKW's Chief of Operations Staff. However, despite this seemingly powerful hierarchy, the German military's officers mostly disregarded Keitel's position, deeming him nothing more than Hitler's lackey. Other officers often had direct access to the Führer, such as officers with the rank of field marshal, while other officers even outranked Keitel, an example being the Commander-in-Chief of the Air Force, Hermann Göring. This position ideally meant Göring was subordinate to Keitel, but his alternate rank of Reichsmarschall made him the second most powerful person in Germany after Hitler, and he used this alternate power to circumvent Keitel and access Hitler directly whenever he wished.
By June 1938, the OKW comprised four departments: