Question: What is Rollkommando Hamann?
Context: Matthias Hamann (born 10 February 1968, in Waldsassen) is a German football manager and former player.  He is the brother of Dietmar Hamann. Jack Hamann (born November 9, 1954) is an American television correspondent, documentary producer, and author.  His 2005 book "On American Soil" investigated the August 1944 killing of Italian prisoner of war Guglielmo Olivotto at Fort Lawton in Seattle, Washington, and concludes that the resulting military trial—in which Leon Jaworski was the lead prosecutor—was a miscarriage of justice.  Whereas Hamann's own 1987 documentary on the subject largely accepted the then-conventional view that Olivotto had been lynched by African-American soldiers, the book went back to primary sources and heavily revised this view.  The book led to a congressional review and ultimately the voiding of the court-martial of those soldiers. Evelyn Hamann (6 August 1942 – 28 October 2007) was a German actress.  She was born into a family of musicians in Hamburg, Germany: her father Bernhard Hamann was a violinist, the concertmaster of the NDR symphony orchestra, and founder of the "Hamann Quartet"; her mother was a singer and music teacher, and her brother Gerhard was a professor of cello at the Trossingen School of Music.  Evelyn Hamann liked to keep her private life out of the public eye, so little is known about her life off-camera.  Between 1964 and 1976 she was married to Hans Walter Braun, whom she met while acting in Hamburg.  After her divorce she lived with her partner, actor .  She died during the night of 28 to 29 October 2007 in Hamburg, as a result of lymphoma, which had been diagnosed 10 months previously. Elmer Joseph "Doc" Hamann (December 21, 1900 – January 11, 1973) was a Major League Baseball player.  He only appeared in one game, a 15–5 loss to the Boston Red Sox while pitching for the Cleveland Indians on September 21, 1922.  Hamann co-holds a dubious record which can never be broken; since Hamann faced seven hitters and did not record a single out, he retired with a lifetime Earned Run Average of infinity. Steffen Ewald Hamann (born 14 June 1981) is a former German professional basketball player.  He played at the point guard position.  Hamann was also a member of the German national basketball team. Joachim Hamann (18 May 1913 in Kiel – 13 July 1945) was an officer of the "Einsatzkommando 3", a killing unit of "Einsatzgruppe A", responsible for thousands of Jewish deaths in Lithuania.  Hamann organized and commanded "Rollkommando" Hamann, a small mobile killing unit composed of 8–10 Germans and several dozens of local Lithuanian collaborators. Rollkommando Hamann (Lithuanian: "skrajojantis būrys" ) was a small mobile unit that committed mass murders of Lithuanian Jews in the countryside in July–October 1941, with a death toll of at least 60.000 Jews.  The unit was also responsible for a large number of murders in Latvia from July through August, 1941.  At the end of 1941 the destruction of Lithuanian Jewry was effectively accomplished by the Rollkommando in the countryside, by the Ypatingasis būrys in the Ponary massacre, and by the Tautinio Darbo Apsaugos Batalionas in the Ninth Fort in Kaunas.  In about six months an estimated 80% of all Lithuanian Jews were killed.  The remaining few were spared as labor force and concentrated in urban ghettos, mainly the Vilna and Kaunas Ghettos. Three Critics of the Enlightenment: Vico, Hamann, Herder is a collection of essays in the history of philosophy by 20th century philosopher and historian of ideas Isaiah Berlin.  Edited by Henry Hardy and released posthumously in 2000, the collection comprises the previously published works "Vico and Herder: Two Studies in the History of Ideas" (1976) – an essay on Counter-Enlightenment thinkers Giambattista Vico and Johann Gottfried Herder – and "The Magus of the North: J. G. Hamann and the Origins of Modern Irrationalism" (1993), concerning irrationalist Johann Georg Hamann. Boogie Boy is a 1998 film featuring Traci Lords as Shonda.  It was written and directed by Craig Hamann and produced by Braddon Mendelson.  It also stars Mark Dacascos, Emily Lloyd, Jaimz Woolvett, Frederic Forrest, Joan Jett and Linnea Quigley (cameo).  Director Craig Hamann is known for co-starring in Quentin Tarantino's unfinished film My Best Friend's Birthday. Hamann Motorsport GmbH is a German car tuning company based in Laupheim.  It specialises in Audi, Aston Martin, Bentley, BMW, Mini, Ferrari, Fiat, Jaguar, Land Rover, Maserati, Mercedes, Rolls Royce, Porsche and Lamborghini cars.  Hamann Motorsport was founded by Richard Hamann in 1986.
Answer: unit