Walther von Reichenau Walter von Reichenau ( 8 October 1884 – 17 January 1942 ) was a German " Generalfeldmarschall " during World War II . He was also a recipient of the Knight ' s Cross of the Iron Cross ( ) . The Knight ' s Cross of the Iron Cross was awarded to recognise extreme battlefield bravery or successful military leadership . Early history . Reichenau was born in Karlsruhe , Baden - Württemberg . He was born into an aristocratic Prussian family . Throughout the 19th and early 20th centuries the von Reichenau family owned and operated one of the largest furniture factories in Germany . His father was a Prussia n general . Reichenau joined the German Army in 1903 . During World War I he served on the Western Front . He was awarded the Iron Cross First Class and by 1918 had been promoted to the rank of captain . Interwar years . Following the armistice Reichenau was selected to remain in the Reichswehr . The Reichswehr was the 96 , 000 man army that Germany was allowed to maintain under the terms of the Treaty of Versailles . The Reichswehr was limited to 4 , 000 officers , and the German General Staff was not permitted to exist . Reichenau took a post in the Truppenamt , which was the equivalent underground General Staff that was formed by Hans von Seeckt . From 1931 Reichenau was Chief of Staff to the Inspector of Signals at the Reichswehr Ministry , and later served with General Werner von Blomberg in East Prussia . Here he supported Blomberg in the development of new tactics to put into practice the concept of mobile warfare that showed promise at the end of the First World War . Reichenau had many of the books of British tank proponents , including B . H . Liddell Hart and J . F . C . Fuller , translated into German . His uncle was an ardent Nazi , and introduced Reichenau to Adolf Hitler in 1932 . Reichenau joined the Nazi Party , though doing so was a violation of army regulations laid down by Seeckt to insulate the army from national politics . In 1938 , records indicate , the family " donated " the factory to the Nazi Party . The factory was transformed into a munitions plant . During Allied attacks in 1945 , this factory outside Karlsruhe , Germany , was destroyed in an air raid . He was married to Alix , daughter of Silesian Count Andreas von Maltzan . During the war , Alix ' s sister Maria ( Marushka ) hid her Jewish lover Hans Hirschel from the Gestapo in her Berlin flat ; von Reichenau knew this , and visited them there . Maria also worked to hide underground Jews and political dissidents , sustain them , or help them escape from Germany . When Hitler came to power in January 1933 , Blomberg became Minister of War and von Reichenau was appointed head of the Ministerial Office , acting as liaison officer between the Army and the Nazi Party . He played a leading role in persuading Nazi leaders such as Hermann Göring and Heinrich Himmler that the power of Ernst Röhm and the SA must be broken if the Army was to support the Nazi regime . This led directly to the " " Night of the Long Knives " " of 30 June 1934 . In 1935 von Reichenau was promoted to lieutenant general ( Generalleutnant ) and was appointed Commander in Munich . By 1938 , after the Blomberg - Fritsch Affair in which General Werner von Fritsch was forced out of the Army command , von Reichenau was Hitler ' s first choice to succeed him , but older leaders such as Gerd von Rundstedt and Ludwig Beck refused to serve under him , and Hitler backed down . Von Reichenau ' s enthusiastic Nazism repelled many of the generals who would not oppose Hitler but who did not care for the Nazi ideology . Second World War . Poland and France . In September 1939 , von Reichenau commanded the 10th Army during the invasion of Poland . In 1940 he led the 6th Army during the invasion of Belgium and France , and in July , Hitler promoted him to field marshal . Barbarossa . Reichenau strongly opposed the German invasion of the Soviet Union . Nevertheless as commander of the 6th Army , he led his army into the heart of Russia during the summer of 1941 . The 6th Army was a part of Army Group South , and captured Kiev , Belgorod , Kharkov and Kursk . In September 1941 , Reichenau reportedly wrote to Adolf Hitler to suggest that Ukrainians and White Russians , who initially viewed the German army as liberators , should be recruited to fight against the Bolsheviks . Hitler rejected this idea , telling Reichenau to stop interfering in political matters . Later that month Reichenau wrote again to Hitler on this subject matter , warning him of the dangers of large - scale partisan warfare in the Soviet Union . His advice was ignored , but his persistence in challenging Hitler ' s opinion was noted . During the offensive into Russia the German army was confronted with a number of superior tank designs . Reichenau inspected the Soviet tanks he came across , entering each tank and measuring their armour plate . According to general staff officer Paul Jordan , after examining a T - 34 , von Reichenau told his officers " If the Russians ever produce it on an assembly line we will have lost the war . " Reichenau supported the work of the SS " Einsatzgruppen " in exterminating the Jews in the occupied Soviet territories . On 19 December 1941 Hitler sacked Walther von Brauchitsch as Commander - in - Chief and tried to appoint von Reichenau to the post . But again the senior Army leaders rejected von Reichenau as being " too political " and Hitler appointed himself instead . Death . In January 1942 von Reichenau suffered a cerebral haemorrhage , and it was decided to fly him from Poltava to a hospital in Leipzig , Germany . He is often said to have been killed in a plane crash in Russia , though Görlitz writes that the plane merely made an emergency landing in a field , and that von Reichenau actually died of a heart attack . His death coincided with a propaganda action conducted by the Polish underground ( Operation " Reichenau " ) , whose goal was to discredit Reichenau , in the eyes of the German leadership , as a person who allegedly had been plotting to overthrow the Nazi régime , to sow distrust between the Nazi political leadership and its military command , and punish one of the German generals responsible for war crime s in Poland . This coincidence became a fertile ground for conspiracy theories , which allege that Reichenau might actually have been killed by the Nazi secret services . Politics . Politically , von Reichenau was an anti - Semite who equated Jewry with Bolshevism and the perceived Asian threat to Europe . The infamous October 1941 " Reichenau Order " paved the way for mass murder by instructing the officers thus : All Jews were henceforth to be treated as " de facto " partisans , and commanders were directed that they be either summarily shot or handed over to the " Einsatzgruppen " execution squads of the SS - Totenkopfverbände as the situation dictated . Upon hearing of the Severity Order , Reichenau ' s superior Field Marshal Gerd von Rundstedt expressed " complete agreement " with it , and sent out a circular to all of the Army generals under his command urging them to send out their own versions of the Severity Order , which would impress upon the troops the need to exterminate Jews . During the Nuremberg trials , however , Von Rundstedt denied any knowledge of that order before his capture by the Allies , although he acknowledged that Reichenau ' s orders " may have reached my army group and probably got into the office " . Some historians such as Walter Görlitz have sought to defend von Reichenau , summarizing the above order as " demanding that the troops keep their distance from the Russian civilian population . "