Born in Zuffenhausen near Stuttgart, Germany, as the son of a merchant Boger joined the HJ in his teens. After finishing high school in 1922 he learned the trade of his father over the next 3 years and in 1925 took an office job in Stuttgart at the "Deutsch-Nationalen Handlungsgehilfenverband". He entered the Artamanen-Bund, a völkisch agrarian movement, and joined the Nazi Party in 1929. He was a member of the general SS beginning in 1930. After losing his job in 1932 he was admitted to the Auxiliary Police at Friedrichshafen and in July 1933 to the political police in Stuttgart. From 1936 to 37 he attended the police training school. He was appointed Police Commissioner after passing the police force examination in 1937, even though he had been taken into custody in 1936 for mistreating a prisoner during an interrogation in 1936.
World War II
At the beginning of the Second World War he was transferred to the state police lead office at Zichenau. Three weeks later he was placed in charge of setting up and supervising the borderpolice station in Ostrołęka. In 1940 he joined the 2nd SS and Police Engineer reserve unit based in Dresden, from where he was dispatched to the front and subsequently wounded in 1942. Nine months later he was transferred to Auschwitz, first serving as Zugführer der 2. Wachkompanie, later as Untersturmführer in the Auschwitz political department. The Political Department was the representative of the RSHA in the camp, and its chief responsibilities were keeping files on individual prisoners, the reception of prisoners, maintaining the security of the camp, combating internal resistance and conducting interrogations. From 23 December 1943 until the evacuation of the camp he was the leader of the section of investigations and interrogations with the rank of SS-Hauptsturmführer.
It was a meter-long iron bar suspended by chains hung from the ceiling... A prisoner would be brought in for "questioning," stripped naked and bent over the bar, wrists manacled to ankles. A guard at one side would shove him—or her—off across the chamber in a long, slow arc, while Boger would ask "questions," at first quietly, then barking them out, and at the last bellowing. At each return, another guard armed with a crowbar would smash the victim across the buttocks. As the swinging went on and on, and the wailing victim fainted, was revived only to faint howling again, the blows continued—until only a mass of bleeding pulp hung before their eyes. Most perished from the ordeal--some sooner, some later. In the end a sack bones and flayed flesh and fat was swept along the shambles of that concrete floor to be dragged away.
Post-war
His atrocious crimes in the Political Department continued until the evacuation of Auschwitz in January 1945. Thereafter, on the run for five months until June 1945, he was eventually detained in Ludwigsburg where his parents were living. He should have been extradited to Poland for trial but managed to escape later that same year. From 1948 until mid 1949, he was working as a farm hand in Crailsheim. He then lived with his family under his proper name in Hemmingen near Leonberg. He found a job as supervisor of supplies at the Heinkelwerke, an airplane factory in his birthplace Stuttgart-Zuffenhausen, where he was apprehended in October 1958 at the age of 51. He had heretofore led a withdrawn life; when acquaintances or neighbors asked him about his activities at KZ Auschwitz, he would reply that he had done nothing worthy of regret. He passed denazification. The particular organ of justice by which he was processed in Stuttgart found "... He does not leave the impression of a raw, brutal man, but more one of a rational, well-schooled police commissioner and civil servant... " and stopped the investigation because of the costs to be borne by the government should the investigation continue.
In 1959 he was arrested for the last time, and this time was charged for the war crimes he committed at Auschwitz. On 20 August 1965 he became part of the Frankfurt Auschwitz Trials by the Landgericht Frankfurt am Main under Chief Judge Hans Hofmeyer for aiding and abetting the murder of Jews. After a series of eyewitness testimonies he was finally sentenced to life imprisonment for murder in at least 5 cases, collective murder in at least 109 cases and collective help for collective murder.
