Title: ZF Friedrichshafen
Content:  ZF Friedrichshafen AG, also known as ZF Group, originally Zahnradfabrik Friedrichshafen, and commonly abbreviated to ZF (ZF = "Zahnradfabrik" = "Cogwheel Factory"), is a German car parts maker headquartered in Friedrichshafen, in the south-west German state of Baden-Württemberg. Specialising in engineering, it is primarily known for its design, research and development, and manufacturing activities in the automotive industry. It is a worldwide supplier of driveline and chassis technology for cars and commercial vehicles, along with specialist plant equipment such as construction equipment. It is also involved in rail, marine, defense and aviation industries, as well as general industrial applications. ZF has 241 production locations in 41 countries with approximately 148,000 (2019) employees. ZF Friedrichshafen is more than 90% owned by the Zeppelin Foundation, which is largely controlled by the town of Friedrichshafen.
Title: Friedrichshafen
Content:  Rolls-Royce Power Systems AG (MTU), the German engine manufacturing company owned by Rolls-Royce is also located in Friedrichshafen. Apart from industry and tourism, various international regular trade fairs, such as Aero (aviation technology), Interboot (water sports), OutDoor, Motorradwelt (Motorbikes), Eurobike (bicycles) and Tuning World Bodensee (car tuning) are important economical factors. There is a large fair ground (Messe Friedrichshafen) near Friedrichshafen airport where all these and many more trade fairs take place every year. Furthermore, the Graf-Zeppelin-Haus cultural centre has become a popular location for congresses, conferences, musical and other events. Friedrichshafen is the location for Europe's largest ham radio convention.
Title: MTU Friedrichshafen
Content:  also continued to build heavy duty diesel engines for marine and rail purposes. During the Second World War, Maybach produced the engines for Germany's medium and heavy tanks. The company was renamed MTU Friedrichshafen in the 1960s and continued to supply the engines for the Leopard 2 main battle tank. MTU derives from Motoren- und Turbinen-Union meaning "Motor (Engine) and Turbine Union". MTU Friedrichshafen remained a subsidiary of DaimlerChrysler until 2006 when it was sold off to the EQT IV private equity fund, becoming a part of the Tognum Corporation. Rolls-Royce Holdings and Daimler AG acquired Tognum in 2011. In 2014, Tognum was renamed Rolls-Royce Power Systems, having become a 100 per cent subsidiary of Rolls-Royce Holdings. The company manufactures diesel engines for trains, ships, oil and gas installations, military vehicles, agriculture, mining and construction equipment, as well as diesel generators and molten carbonate fuel cells.
Title: Bombing of Friedrichshafen in World War II
Content:  Friedrichshafen lies in the Bodenseekreis district, on Lake Constance in the extreme south of Germany, and at the time it was at the edge of the German nightfighter defences. Targets included the Dornier Flugzeugwerke aircraft works at Manzell, the Maybach tank engine factory, the Luftschiffbau Zeppelin aircraft works and its Oberraderach test facility near Raderach, and the Zahnradfabrik Friedrichshafen (literally "gearwheel factory Friedrichshafen") tank gearbox factory. In February 1944 an underground factory at Immenstaad near Friedrichshafen was suspected to be a synthetic oil and/or liquid oxygen plant. Near Überlingen, forced labor of KZ-Häftlinge im Goldbacher Stollen, KZ Nebenlager Raderach and the Aufkirch subcamp of Dachau concentration camp was used for constructing an underground facility for armament manufacturing (code name "Magnesit" ) safe from Allied air raids.
Title: MTU Friedrichshafen
Content:  MTU Friedrichshafen GmbH is a manufacturer of commercial internal combustion engines founded by Wilhelm Maybach and his son Karl Maybach in 1909. Wilhelm Maybach was the technical director of Daimler-Motoren-Gesellschaft (DMG), a predecessor company of the German multinational automotive corporation Daimler AG, until he left in 1907. On 23 March 1909, he founded the new company, Luftfahrzeug-Motorenbau GmbH (Aircraft Engine Manufacturing Corp), with his son Karl Maybach as director. A few years later the company was renamed to Maybach-Motorenbau GmbH (Maybach Engine Manufacturing Corp), which originally developed and manufactured diesel and petrol engines for Zeppelins, and then railcars. The Maybach Mb.IVa was used in aircraft and airships of World War I. The company first built an experimental car in 1919, with the first production model introduced two years later at the Berlin Motor Show. Between 1921 and 1940, the company produced various classic opulent vehicles. The 
Title: Maybach
Content:   During the Second World War, Maybach produced the engines for most of Nazi Germany's tanks and half-tracks. These included almost all the production tank engines through Panzer I, II, III, IV and V, the Tiger I and II (Maybach HL230) and other heavy tanks: and also engines for half-tracks such as the Sd.Kfz. 251 personnel carrier and prime movers like the Sd.Kfz. 9. The engine plant was one of several industries targeted at Friedrichshafen. After WW II, the factory performed some repair work, but automotive production was never restarted, and some 20 years later, the company was renamed MTU Friedrichshafen. Daimler-Benz purchased the company in 1960. Post-1960, the company was mainly used to make special editions of Mercedes cars in the W108 and W116 model range, which were virtually hand built. These cars however carried the Mercedes badge and serial numbers.
Title: MTU Friedrichshafen
Content: 1909: Foundation of Luftfahrzeug-Motorenbau GmbH in Bissingen an der Enz as part of the Zeppelin corporation. The company manufactures engines for airships. ; 1912: 1911/12 relocation to Friedrichshafen; the name is changed to Motorenbau GmbH. ; 1918: Motorenbau GmbH is renamed Maybach-Motorenbau GmbH. After the end of the First World War the company began to manufacture car engines. ; 1966: Merger of the two companies Mercedes-Benz Motorenbau Friedrichshafen GmbH and Maybach-Motorenbau GmbH to form Maybach Mercedes-Benz Motorenbau GmbH. ; 1969: Maybach Mercedes-Benz Motorenbau GmbH is renamed Motoren und Turbinen-Union Friedrichshafen GmbH. The company is a subsidiary of MTU München GmbH which is owned at equal shares by Daimler-Benz AG and MAN AG until 1985. ; 1989: Incorporation of MTU Friedrichshafen in Deutsche Aero-space AG (DASA), a company of the Daimler-Benz Group. ; 1994: Cooperation of MTU Friedrichshafen with Detroit Diesel Corporation ; 1995: MTU Friedrichshafen 
Title: Bad Friedrichshall
Content:  50 mine chambers was planned. Another construction company was the company Koch & Mayer GmbH from Heilbronn. The aircraft company Ernst Heinkel AG had a leading position among the military companies in Kochendorf, commissioned to build experimental units for turbine He S 011, which was to be installed in the Messerschmitt Me P 1101 hunting aircraft. For this turbine, Robert Bosch GmbH and Siemens-Schuckert-Werke AG produced spark plugs, injection pumps and electrical materials. The Motorenwerke Mannheim AG had submarine engine components built in the mine. Only the production of machine guns could not be attributed to any company yet. A detailed permanent exhibition since 2012 can be visited in the Bad Friedrichshall Kochendorf saltmine.
Title: Flugmotorenwerke Ostmark
Content:  The Flugmotorenwerke Ostmark (German for Aircraft Engine Factory Eastern March) was a large German aircraft engine supplier during World War II, a part of the Steyr-Daimler-Puch cartel. It specialized in engines for the majority of aeroplanes designed by the Heinkel works and had three large factories at its disposal: in Wiener Neudorf, Biedermannsdorf and Guntramsdorf. It also closely cooperated with the Steyr company located nearby. All the factories used slave labour of the inmates of the Mauthausen-Gusen concentration camp. After the war the company's sites were taken over by Eco Plus.
Title: Motorenfabrik Oberursel
Content:  Motorenfabrik Oberursel A.G. was a German manufacturer of automobile, locomotive and aircraft engines situated in Oberursel (Taunus), near Frankfurt (Main), Germany. During World War I it supplied a major 100 hp-class rotary engine that was used in a number of early-war fighter aircraft designs. In 1921 the company merged with Deutz AG, and then again in 1930 with Humboldt-Deutz Motoren, and finally in 1938 with Klöcknerwerke AG. From this point on they were known as the Klöckner-Humboldt-Deutz Oberursel factory, known primarily for their locomotive engines. Today they are part of Rolls-Royce Deutschland, and produce one family of their jet engines. The factory in Oberursel is claimed to be the oldest surviving aircraft engine factory in the world.

Question: Verify the following claims with "True" or "False": They are powered by a company made engines in Friedrichshafen, Germany!
Answer: True