The Commissar Order (German: Kommissarbefehl) was an order issued by the German High Command (OKW) on 6 June 1941 before Operation Barbarossa. Its official name was Guidelines for the Treatment of Political Commissars (Richtlinien für die Behandlung politischer Kommissare). It instructed the Wehrmacht that any Soviet political commissar identified among captured troops be summarily executed as an enforcer of the Judeo-Bolshevism ideology in military forces.
According to the order, all those prisoners who could be identified as "thoroughly bolshevized or as active representatives of the Bolshevist ideology" should also be killed.
Planning for Operation Barbarossa began in June 1940. In December 1940 Hitler began sending out vague preliminary directives to senior generals on how the war was to be conducted, giving him the opportunity to gauge their reaction to such matters as collaboration with the SS in the "rendering harmless" of Bolsheviks. The Wehrmacht was already to some extent politicised, having participated in the extra-legal killings of Ernst Rohm and his associates in 1934, communists in the Sudetenland in 1938, and Czech and German political exiles in France in 1940. On March 3, 1941 Hitler explained to his closest military advisers how the war of annihilation was to be waged. On that same day, instructions incorporating Hitler's demands went to Section L of the Oberkommando der Wehrmacht (OKW) (under Deputy Chief Walter Warlimont); these provided the basis for the "Guidelines in Special Areas to Instructions No. 21 (Case Barbarossa)" discussing, among other matters, the interaction of the army and SS in the theater of operations, deriving from the 'need to neutralize at once leading bolsheviks and commissars.'
Discussions proceeded on March 17 during a situation conference, where Chief of the OKH General Staff Franz Halder, Quartermaster-General Eduard Wagner and Chief of Operational Department of the OKH Adolf Heusinger were present. Hitler declared: "The intelligentsia established by Stalin must be exterminated. The most brutal violence is to be used in the Great Russian Empire" (quoted from Halder's War Diary entry of March 17).