OKW, or the Oberkommando der Wehrmacht, was the high command of the German armed forces during World War II. Established in 1938, it coordinated the operations of the Heer (Army), Kriegsmarine (Navy), and Luftwaffe (Air Force). The OKW played a crucial role in planning military strategies and overseeing campaigns across Europe. The organization was led by Wilhelm Keitel, who served as Chief of the OKW. Despite its authority, the OKW often faced challenges from Adolf Hitler, who frequently intervened in military decisions. This tension contributed to strategic failures and ultimately impacted the outcome of the war.