Oberkommando der Wehrmacht
The Oberkommando der Wehrmacht (OKW; Wehrmacht High Command), established in 1938, was designed to exercise command and control of the three branches of the Wehrmacht—the Heer (army), the Luftwaffe (air force), and the Kriegsmarine (navy)—each of which had its own high command. Adolf Hitler served as the Commander in Chief of the Armed Forces (after February 1938) and Commander in Chief of the Army (after December, 1941). Other key figures were Wilhelm Keitel and Alfred Jodl.
For more information, please see: United States Holocaust Memorial Museum. “German Armed Forces High Command.” Holocaust Encyclopedia. https://encyclopedia.ushmm.org/content/en/article/german-armed-forces-high-command. Accessed 2 June 2021.