Question: What is the name of one of the first prominent Nazis to be tried by the U.S. military, who took part in the notorious crimes at Buchenwald and Majdanek?

Context paragraphs:
Hermann Hackmann: "SS-Hauptsturmführer" Hermann Hackmann (October 11, 1913 – August 20, 1994) was a Nazi German war criminal, SS captain in two extermination camps during World War II.  He was a roll call officer at KL Buchenwald, and lead guard in charge of the so-called protective custody at Majdanek concentration camp in German-occupied Poland.  Described as a brutal man with a cynical sense of humour, Hackmann was tried three times.  The first time, he was prosecuted for murder and sentenced to death by SS Judge Georg Konrad Morgen in connection with the Koch trial.  Hackmann escaped punishment and was evacuated by the Gestapo.

Majdanek trials: The Majdanek trials were a series of consecutive war-crime trials held in Poland and in Germany after World War II, constituting the overall longest Nazi war crimes trial in history spanning over 30 years.  The first judicial trial of Majdanek extermination camp officials took place from November 27, 1944, to December 2, 1944, in Lublin, Poland. <ref name="Poland/Majdanek-1"> </ref> The last one, held at the District Court of Düsseldorf began on November 26, 1975, and concluded on June 30, 1981.  It was Germany's longest and most expensive trial, lasting 474 sessions.

Ilse Koch: Ilse Koch (] ; née "Margarete Ilse Köhler"; 22 September 1906 – 1 September 1967) was the wife of Karl-Otto Koch, commandant of the Nazi concentration camps Buchenwald (1937–1941) and Majdanek (1941–1943).  In 1947, she became one of the first prominent Nazis to be tried by the U.S. military.

Buchenwald Trial: The Buchenwald Trial or United States of America vs. Josias Prince of Waldeck et al. (also referred as Case 000-50-9) was a war crime trial conducted by the United States Army as a court-martial in Dachau, then part of the American occupation zone.  It took place from April 11 to August 14, 1947 in the internment camp of Dachau, where the former Dachau concentration camp had been located until late April 1945.  In this trial, 31 people were indicted for war crimes related to the Buchenwald concentration camp and its satellite camps, all of whom were convicted.  The Buchenwald Trial was part of the Dachau trials, which were held between 1945 and 1948.

Murder of Leslie Mahaffy: Leslie Erin Mahaffy (July 5, 1976 – June 16, 1991) was a Canadian murder victim of killers Paul Bernardo and Karla Homolka.  At the time of her death, she was a 14-year-old student and resident of Burlington, Ontario.  Mahaffy's kidnapping was one in a series of disappearances of Ontario schoolgirls in the early 1990s, including Kristen French, also a victim of Bernardo and Homolka.  Prior to killing Mahaffy in 1991 and French in 1992, the pair had raped and killed Homolka's teenaged sister Tammy in 1990.  The disappearances, arrests, and convictions were widely covered in Canadian media, becoming one of the most notorious crimes in Canadian history.

Anton Thernes: "SS-Obersturmführer" Anton Thernes (8 February 1892 – 3 December 1944) was a Nazi German war criminal, deputy commandant of administration at the notorious Majdanek concentration camp on the outskirts of Lublin, Poland in World War II. <ref name="Poland/Majdanek-1"> </ref> He was tried at the Majdanek Trials and executed on 3 December 1944 along with five other war criminals near the gas chambers and the Majdanek crematorium.

Nicholas Radford: Nicholas Radford (died 23 October 1455) of Upcott in the parish of Cheriton Fitzpaine, and of Poughill, Devon, was a prominent lawyer in the Westcountry who served as Member of Parliament for Lyme Regis, Dorset (May 1421) and Devon (1435).  During the anarchic times of the Wars of the Roses he was caught up in the dynastic Westcountry rivalry between Thomas de Courtenay, 5th Earl of Devon, of Tiverton Castle, for whom during his minority he had acted as steward, and William Bonville, 1st Baron Bonville, of Shute.  His murder in 1455 by the Earl's faction "ranks among the most notorious crimes of the century", and was the precursor of the Battle of Clyst Heath (1455) fought shortly thereafter near Exeter by the private armies of the two magnates.  He served as a Justice of the Peace for Devon (1424-1455), as Escheator for Devon and Cornwall (1435-6), Recorder of Exeter (1442-1455) and as Tax Collector for Devon in 1450 and as Apprentice-at-law for the Duchy of Lancaster (1439-1455).

Harry Lazarus: Harry Lazarus (1839 – January 2, 1865) was an English-born American pugilist, saloon keeper, thief and underworld figure in New York City during the 1850s and early 1860s.  He is sometimes confused with his father, famed pugilist Israel "London Izzy" Lazarus, and was one of his three sons along with John and Izzy Lazarus, Jr.  His murder by Barney Friery, and subsequent trial, in 1865 was one of the most notorious crimes in the city's history prior to the end of the American Civil War.

Gustav Laabs: Gustav Laabs (born 20 December 1902-died 12 March 1980) was a German SS commander during the Nazi era.  During the Second World War, he worked as a gas van operator at the Chełmno extermination camp in Wartheland.  As an operator of a gas van, Laabs was directly involved in and responsible for the genocidal extermination of over 100,000 men, women and children, most of whom were killed on account of being Jewish.  After the war, he was tried and convicted for his crimes against humanity.  Despite being convicted, Laabs was given the lenient sentence of 15 years (subsequently reduced to 13 years) by a regional court in Landgericht Bonn, Germany.  Far from being outliers, such instances of leniency, extended to perpetrators of genocide and crimes against humanity during trials in post-Nazi Germany, constituted the norm, as evidenced by the fact that most of the perpetrators of Nazi war crimes and the Final Solution were not brought to justice.  Many former SS officers and Nazis, who were directly responsible for perpetrating genocide and murdering countless innocent people, were contracted to work for US and British intelligence agencies as part of the war against the USSR and Communism (also see Operation Paperclip for more on post-WWII Allied collaboration with Nazis).

Karl-Otto Koch: Karl-Otto Koch (] ; 2 August 1897 – 5 April 1945) was a mid-ranking commander in the SS of Nazi Germany who was the first commandant of the Nazi concentration camps at Buchenwald and Sachsenhausen.  From September 1941 until August 1942, he served as the first commandant of the Majdanek concentration camp in occupied Poland, stealing vast amounts of valuables and money from murdered Jews.  His wife, Ilse Koch, also took part in the notorious crimes at Buchenwald and Majdanek.

Supporting paragraphs: Karl-Otto Koch Ilse Koch
Answer: Ilse Koch