The Wehrmacht (also called the Nazi German Army Forces or The German Army in English) was Nazi Germany's unified military armed forces from 1935 to 1945. The Wehrmacht consisted of the Heer (army), the Kriegsmarine (navy), and the Luftwaffe (air force). Overall command of all these forces was Oberkommando der Wehrmacht (OKW).
The Waffen-SS was not part of the Wehrmacht, but was subject to its Supreme Command. It began as a small armed section of Heinrich Himmler's Allgemeine SS, but during World War II it grew to nearly a million members.