Question: The French Air Force aircraft engine series Hispano-Suiza V-12's last two models were used mainly around what war(s)?
Context: The Aichi Kokuki KK AE1A Atsuta (Japanese:アツタ or 熱田) was a Japanese licensed version of the German Daimler-Benz DB 601A 12-cylinder liquid-cooled inverted-vee aircraft engine.  The Atsuta powered only two models of Imperial Japanese Navy Air Service (IJNAS) aircraft in World War II.  The Imperial Japanese Army Air Service (IJAAS) used the same engine (manufactured by Kawasaki as the Kawasaki Ha40) to power its Kawasaki Ki-61 "Hien" (Allied reporting name "Tony") fighter.  The IJNAS's Atsuta and its IJAAS cousin, the Ha-40 were based on the engine that powered Germany's Messerschmitt Bf 109E fighter. Air Force One is the official air traffic control call sign for a United States Air Force aircraft carrying the President of the United States.  In common parlance the term describes those Air Force aircraft designed, built, and used to transport the president.  The presidential aircraft is a prominent symbol of the American presidency and its power. The Hispano-Suiza 12M was one of two new V-12 engine designs first run in 1927-8.  It produced about 375 kW (500 hp), was the first to use gas nitride hardening and introduced wet cylinder liners into Hispano-Suiza's aircraft engine range. The 12Z, designated Type 89 by the company, was the final evolution of the series of Hispano-Suiza V-12 aircraft engines.  The Z model had just entered production when France fell to the Germans during World War II.  A small number were produced during the war but the German occupation government would not allow full-scale production to start.  After the war small numbers were built to equip new designs, but the rapid introduction of the jet engine ended further development. The French Air Force (French: "Armée de l'air" ] , literally "air army") is the air force of the French Armed Forces.  It was formed in 1909 as the "Service Aéronautique", a service arm of the French Army, then was made an independent military arm in 1934.  The number of aircraft in service with the French Air Force varies depending on source, however sources from the French Ministry of Defence give a figure of 658 aircraft in 2014.  The French Air Force has 241 combat aircraft in service, with the majority being 133 Dassault Mirage 2000 and 108 Dassault Rafale.  As of early 2017, the French Air Force employs a total of 41,160 regular personnel.  The reserve element of the air force consisted of 5,187 personnel of the Operational Reserve. The Hispano-Suiza 12Y was an aircraft engine produced by Hispano-Suiza for the French Air Force in the pre-WWII period.  The 12Y became the primary French 1,000 hp (750 kW) class engine and was used in a number of famous aircraft, including the Morane-Saulnier M.S.406 and Dewoitine D.520.  Its design was based on the earlier and somewhat smaller, 12X.  A further development was under way, the 12Z, but ended due to the German occupation of France. The Jumo 211 was an inverted V-12 aircraft engine, Junkers Motoren's primary aircraft engine of World War II.  It was the direct competitor to the famous Daimler-Benz DB 601 and closely paralleled its development.  While the Daimler-Benz engine was mostly used in single-engined and twin-engined fighters, the Jumo engine was primarily used in bombers such as Junkers' own Ju 87 and Ju 88, and Heinkel's H-series examples of the Heinkel He 111 medium bomber.  It was the most-produced German aero engine of the war, with almost 70,000 examples completed. The Hispano-Suiza 12N was one of two new V-12 engine designs first run in 1928 and was manufactured by Hispano-Suiza's French subsidiary for the Armee d'l'Air.  It produced about 485 kW , was the first to use gas nitride hardening and introduced wet cylinder liners into Hispano-Suiza's aircraft engine range.  It powered the first non-stop flight from Europe to the United States. Cotam Unité is the official air traffic control call sign of any French Air Force aircraft carrying the President of France.  From the 1960s to 1994, COTAM was the acronym for the French Air Force's Military Air Transport Command.  In November 2010, the Governmental transport squadron (ETEC 65) received a newly refurbished Airbus A330 ordered by the government to be used as the presidential (or prime ministerial) aircraft replacing 2 Airbus 319.  ETEC 65 also has the following aircraft for VIP transport: Air Force Two is the air traffic control call sign held by any United States Air Force aircraft carrying the U.S. Vice President, but not the President.  The term is often associated with the Boeing C-32, a modified 757 which is most commonly used as the Vice President's transport.  Other 89th Airlift Wing aircraft, such as the Boeing C-40 Clipper, C-20B, C-37A, and C-37B have served in this role as well.  The VC-25A, the aircraft most often used by the President as Air Force One, has also been used by the vice president as Air Force Two.
Answer: World War II