Henning von Tresckow

After his suicide, his wife and daughters were arrested. His sons were already serving in the military. Mark would die in military service in 1945, almost a year after his father's suicide. The daughters were detained in a children's home in Bad Sachsa, Germany, together with several other children of the leaders of the 20 July plot.

As Chief of Staff of the 2nd Army, Tresckow signed an order on 28 June 1944 to abduct Polish and Ukrainian children in the so-called Heuaktion (Hay Action). Between 40,000 and 50,000 Polish and Ukrainian children aged 10 to 14 were kidnapped for Nazi Germany's forced labour programme. The order read in part "In operations against gangs, any boys and girls taken between ages 10 and 13 who are physically healthy, and whose parents either cannot be located or who, as persons unable to work, are to be sent to the area earmarked for remaining families (the dregs are to be sent to the Reich)."

It came on 13 March 1943, when Hitler finally visited troops on the Eastern Front at Smolensk after a few cancellations and postponements. Under the initial plan, a group of officers were to shoot Hitler collectively at a signal in the officers' mess during lunch but Kluge, Commander of Army Group Center, who had been informed about the plot, urged Tresckow not to carry it out saying, "For heaven's sake, don't do anything today! It's still too soon for that!" He argued that the German army and people were not ready to accept the coup and would not understand such an act. He also feared a civil war between the Army and SS, since Heinrich Himmler had canceled his visit and could not be killed at the same time.

Other plots similarly failed because of Hitler's good luck and irregular habits. Most importantly, they had no access to Hitler since he no longer visited the front, rarely visited Berlin and spent most of his time at the Wolf's Lair in East Prussia or the Berghof in Bavaria. Tresckow lacked the required clearance to enter either site and the extremely high security made any attempt impractical and unlikely to succeed. The elimination of Oster's group in April 1943 (his deputy Hans von Dohnanyi and Lutheran theologian Dietrich Bonhoeffer were arrested, and Oster was placed under house arrest) was a further setback.

Eventually, the conspirators came to rely more on the Reserve Army in Berlin and other districts to stage a coup against the German government. Olbricht now put forward a new strategy for staging a coup against Hitler. The Reserve Army had an operational plan called Operation Walküre (Valkyrie), which was to be used in the event that the disruption caused by the Allied bombing of German cities caused a breakdown in law and order, or an uprising by the millions of slave laborers from occupied countries now being used in German factories. Olbricht suggested that this plan could be used to mobilize the Reserve Army to take control of German cities, disarm the SS and arrest the Nazi leadership once Hitler had been assassinated. During August and September 1943, Tresckow took extended sick leave in Berlin to draft the "revised" Valkyrie plan with fine details and precise timetables. Revised orders and additional proclamations that would pin the blame for the uprising on the Nazi party were typed by Tresckow's wife, Erika, and his secretary, Countess Margarete von Oven, who wore gloves so as not to leave fingerprints. These 1943 papers were recovered by the Soviets after the war and finally published in 2007, showing Tresckow's central role in the conspiracy and the idealistic motivations of the resistance group at that time. Knowledge of the Jewish Holocaust was a major impetus for many officers involved.

But when Tresckow was assigned to command of a battalion on the Eastern Front in October 1943, he was no longer in position to actively plan or effect the coup. Even his promotion a month later to Chief of Staff of the Second Army did not bring him much closer. To gain access to Hitler, he proposed to his old comrade General Rudolf Schmundt, Hitler's chief adjutant and Army personnel chief, to create a new department of psychological and political warfare to evaluate data and make reports directly to the Führer. Schmundt, who was still well disposed toward his old friend but suspected that Tresckow disapproved of the Führer, quietly let the matter drop. Tresckow also applied to become General Adolf Heusinger's delegate in the Army High Command (OKH) during the latter's two-month leave, which would also give him access to Hitler's meetings, but Heusinger, who was earlier approached by conspirators, rejected it apparently for the same reason.

Colonel Claus Schenk Graf von Stauffenberg, who met Tresckow in August 1943 and worked together on revising Operation Valkyrie, took the responsibility for planning and implementing Hitler's assassination. By the time Stauffenberg was appointed Chief of Staff of the Reserve Army and was ready to carry out the assassination attempt, the Allies had already landed in Normandy. When Stauffenberg sent a message to Tresckow through Lehndorff to ask whether there was any point in making the attempt since there was no practical purpose to be served, Tresckow urged him not only to attempt the assassination but to go ahead with the coup in Berlin even if the assassination were to fail. He argued that there must be an overt act of German opposition to Hitler regardless of the consequences. He also told Philipp von Boeselager and Margarete von Oven that 16,000 people were being killed daily not as casualties of war but from being murdered by the Nazis, and Hitler had to be killed just to put an end to it. A few days before the coup attempt, Tresckow confided to a friend that "in all likelihood everything will go wrong". When asked whether the action was necessary nonetheless, he replied, "Yes, even so."

It was decided that Tresckow's group would assassinate Hitler and thereby provide the 'spark' for the coup, which Olbricht would direct from Berlin. In late 1942, Olbricht indicated that he still needed about eight weeks to complete preparations for the coup. Shortly thereafter, Tresckow traveled to Berlin to discuss the few remaining questions and emphasize that time was running short. In the winter of 1943, Olbricht declared: "We are ready. The spark can now be set off." Tresckow assured the conspirators that he would take action at the first available opportunity.

From 1941 to 1943, he served under Field Marshal Fedor von Bock, his wife's cousin, and later Field Marshal Günther von Kluge as chief operations officer of the German Army Group Centre in Operation Barbarossa, the invasion of the Soviet Union. Subsequently, in October and November 1943, he served in combat as the commanding officer of Grenadier Regiment 442, defending the western bank of the Dnieper River in Ukraine. From December 1943 until his death in 1944, he served as Chief of Staff of the 2nd Army.

At the end of September 1941, Tresckow sent his special operations officer Schlabrendorff to Berlin to contact opposition groups and declare that the staff of Army Group Centre was "prepared to do anything." This approach, made at the height of German expansion and the nadir of anti-Hitler opposition, represented the first initiative to come from the front and from the Army, as Ulrich von Hassell noted in his diary. Schlabrendorff continued to serve as liaison between Army Group Centre and opposition circle around General Ludwig Beck, Carl Friedrich Goerdeler and Colonel Hans Oster, the deputy head of Abwehr (German military intelligence) who was involved in a 1938 coup attempt against Hitler (Oster Conspiracy). Oster's recruitment of General Friedrich Olbricht, head of the General Army Office headquarters, in 1942 linked this asset to Tresckow's resistance group in Army Group Centre, creating a viable coup apparatus.

Later in 1939 and into 1940, he served as the second general staff officer of Army Group A under Gerd von Rundstedt and Erich von Manstein, culminating in the invasion of France in the spring of 1940. Tresckow played a role in the adoption of the Manstein Plan, which proved to be so successful in the French campaign. Tresckow's former regimental comrade Rudolf Schmundt was Hitler's chief military aide, and it was through the Tresckow-Schmundt channel that Manstein's plan, after being rejected by Army High Command, was brought to Hitler's attention. He is also said to have worked on developing the Manstein Plan itself as Günther Blumentritt's deputy. After the fall of France, he did not share the euphoria that swept Germany and brought Hitler to the peak of his popularity. In October, he said in Paris to a secretary (the future wife of Alfred Jodl), "If Churchill can induce America to join in the war, we shall slowly but surely be crushed by material superiority. The most that will be left to us then will be the Electorate of Brandenburg, and I'll be chief of the palace guard."

He therefore sought out civilians and officers who opposed Hitler, such as Erwin von Witzleben, who dissuaded Tresckow from resigning from the Army, arguing that they would be needed when the day of reckoning came. By the summer of 1939, he told Fabian von Schlabrendorff that "both duty and honor demand from us that we should do our best to bring about the downfall of Hitler and National Socialism to save Germany and Europe from barbarism." In the campaign against the Soviet Union, Tresckow resumed his resistance activities with renewed urgency. He was appalled by the Commissar Order, of which he said:

In 1938, the Blomberg–Fritsch affair further strengthened his antipathy to the Nazis. He regarded the Kristallnacht, a state-sanctioned, nationwide pogrom of Jews, as personal humiliation and degradation of civilization.

In 1934, Tresckow began General Staff training at the War Academy and graduated as the best of the class of 1936. He was assigned to the General Staff's 1st Department (Operations), where he worked in close contact with Generals Ludwig Beck, Werner von Fritsch, Adolf Heusinger and Erich von Manstein.

Although initially supportive of Hitler because of his own opposition to the Treaty of Versailles, Tresckow was quickly disillusioned by 1934 by the events of the Night of the Long Knives (30 June to 2 July 1934) and its violence against the Jewish population.

In 1926, Tresckow married Erika von Falkenhayn, the daughter of Prussian general Erich von Falkenhayn and his wife, Ida (née Selkmann). General von Falkenhayn served as Prussian Minister of War during World War I as well as Chief of German General Staff. Tresckow and von Falkenhayn had four children, Mark, born 1927, Rüdiger, born 1928, Uta, born 1931 and Adelheid, born 1939.

After World War I, Tresckow stayed with the famed Infantry Regiment 9 Potsdam and took part in the suppression of the Spartacist movement in January 1919, but resigned from the Weimar Republic Reichswehr Army in 1920 in order to study law and economics. He worked in a banking house and embarked on a world journey visiting Britain, France, Brazil and the eastern United States in 1924 before he had to abandon it to take care of family possessions back home. Like members of many prominent Prussian families, Tresckow married into another family with long-standing military traditions. In 1926, he married Erika von Falkenhayn, only daughter of Erich von Falkenhayn, the chief of the General Staff from 1914 to 1916, and returned to military service, being sponsored by Field Marshal Paul von Hindenburg. Nevertheless, he was not a typical Prussian officer. He wore his uniform only when it was absolutely required and disliked the regimentation of army life. He liked to recite Rainer Maria Rilke, and spoke several languages, including English and French.

He received most of his early education from tutors on his family's remote rural estate; from 1913 to 1917, he was a student at the Gymnasium in the town of Goslar. He joined the 1st Regiment of Foot Guards as an officer cadet at age of 16 and became the youngest lieutenant in the Army in June 1918. In the Second Battle of the Marne, he earned the Iron Cross 2nd class for outstanding courage and independent action against the enemy. At that time Count Siegfried von Eulenberg, the commander of the 1st Regiment of Foot Guards, predicted that "You, Tresckow, will either become chief of the General Staff or die on the scaffold as a rebel."

Henning Hermann Karl Robert von Tresckow (German: [ˈhɛ.nɪŋ fɔn ˈtʁeːs.ko] (listen); 10 January 1901 – 21 July 1944) was a German military officer with the rank of major general in the German Army who helped organize German resistance against Adolf Hitler. He attempted to assassinate Hitler on 13 March 1943 and drafted the Valkyrie plan for a coup against the German government. He was described by the Gestapo as the "prime mover" behind the plot of 20 July 1944 to assassinate Hitler. He committed suicide at Królowy Most on the Eastern Front upon the plot's failure.

Tresckow was born in Magdeburg into a noble family from the Brandenburg region of Prussia with 300 years of military tradition that provided the Prussian Army with 21 generals. His father, Leopold Hans Heinrich Eugen Hermann von Tresckow, later a cavalry general, had been present at Kaiser Wilhelm I's coronation as the emperor of new German Empire at Versailles in 1871. His mother, Marie-Agnes, was the youngest daughter of Count Robert von Zedlitz-Trützschler, a Prussian Minister of Education.