Operation Hydra was a Royal Air Force attack on the Peenemünde Army Research Center on the night of 17/18 August 1943.
 It was the first time a master bomber was used for the main force.
 Group Captain John Searby, CO of 83 Squadron, commanded the operation.
 It began the Operation Crossbow strategic bombing campaign against Nazi Germany's V-weapon programme.
 215 British aircrew members and 40 bombers were lost, and hundreds of civilians were killed in a nearby concentration camp.
 The air raid killed two V-2 rocket scientists and delayed V-2 rocket test launches for seven weeks.
Operation Sandy was the codename for the post-World War II launch of a captured V-2 rocket from the deck of the United States Navy aircraft carrier USS "Midway" on September 6, 1947.
 It marked the first launch of a large rocket, and the only time for a V-2, from a ship at sea.
 Operation Pushover was a follow-up test in late 1949 to assess the danger to a carrier from a V-2 explosion.
Ernst Stuhlinger (December 19, 1913 Niederrimbach, Germany – May 25, 2008) was a German-born American atomic, electrical, and rocket scientist.
 After being brought to the United States as part of Operation Paperclip, he developed guidance systems with Wernher von Braun's team for the US Army, and later was a scientist with NASA.
 He was also instrumental in the development of the ion engine for long-endurance space flight, and a wide variety of scientific experiments.
The Stuhlinger Medal, whose official name is the "Ernst Stuhlinger Medal for Outstanding Achievement in Electric Propulsion", is the highest honor in the field of electric propulsion for spacecraft bestowed by the Electric Rocket Propulsion Society (ERPS), the main professional society in that field, to persons who made outstanding contributions to the science, technology or development of electric propulsion.
The Redl-Zipf V-2 rocket facility (code name "Schlier") in central Austria between Vöcklabruck and Vöcklamarkt was for V-2 rocket motor testing after Raxwerke test equipment had been moved from Friedrichshafen.
 The facility tested V-2 combustion chambers' compatibility with turbopumps since the rocket did not have a controller for reducing the turbopumping of propellant into the chamber if pressure became too high.
 The World War II facility used forced labor of the Schlier-Redl-Zipf subcamp of the Mauthausen-Gusen concentration camp and included a liquid oxygen generation plant in a nearby tunnel.
 After an August 1944  explosion at the liquid oxygen plant stopped Schlier production, the third V-2 liquid oxygen plant (5000 tons/month) was built at a slate quarry at Lehesten near the Mittelwerk (turbopump/chamber compatibility testing for Mittelwerk production was also performed at the Lehesten facility).
 Karl Heimberg, who had worked at Peenemünde Test Stand 7, was transferred to ""Vorwerk Sued"" at Redl-Zipf and then, for the period from late 1944-early April 1945, to Lehesten (he later returned to Peenemünde with Walter Riedel III to burn design office files and participated in the post-war Operation Backfire.)
The Super V-2 was a planned intermediate-range ballistic missile designed in France in 1946–47.
 It was the creation of German engineers who had worked on the original V-2 rocket.
 Four variants, with a range of up to 3600 km and capable of carrying warheads of up to 1000 kg , were envisaged.
 However, the French government declined to fund practical development and the programme was cancelled in 1948.
 The research done on the Super V-2 was repurposed to develop the Véronique sounding rocket, ultimately leading to the Ariane rocket family.
Stuhlinger Ice Piedmont ( ) is a coastal ice piedmont, about 10 nautical miles (18 km) long and wide, located immediately north of Bowers Mountains and between the lower ends of Gannutz and Barber Glaciers. Mapped by United States Geological Survey (USGS) from surveys and U.S. Navy air photos, 1960-62.
 Named by Advisory Committee on Antarctic Names (US-ACAN) in 1968 for Ernst Stuhlinger, National Aeronautics and Space Administration, a member of the U.S. National Science Foundation's Advisory Panel for Antarctic Programs.
Wernher Magnus Maximilian Freiherr von Braun (March 23, 1912 – June 16, 1977) was a German, later American, aerospace engineer and space architect credited with inventing the V-2 rocket for Nazi Germany and the Saturn V for the United States.
 He was the leading figure in the development of rocket technology in Germany and the father of rocket technology and space science in the United States.
Oberraderach (English: Upper Raderach ) was the World War II location of Prüffeld-Anlage Raderach, a V-2 rocket test facility code named "Porcelain Factory" (German: "Porzellanfabrik" ).
 Oberraderach testing ensured V-2 turbopumps did not overpressure combustion chambers (there was no controller) and was planned for rocket motors to be installed by the nearby Zeppelin Works (German: "Luftschiffbau Zeppelin GmbH" ) as part of the Eastern Works (V-2 facilities in the Vienna-Freidrichshafen area).
 Firings were visible in Switzerland across Lake Constance and testing ended shortly after the facility began operation.
The V-2 missile launch site, Blizna was the site of a World War II German V-2 missile firing range.
 Today there is a small museum located in the "Park Historyczny Blizna" (Historical Park) in Blizna, Poland.
 After the RAF strategic bombing of the V-2 rocket launch site in Peenemünde, Germany, in August 1943, some of the test and launch facilities were relocated to Blizna in November 1943.
 The first of 139 V-2 launches was carried out from the Blizna launch site on 5 November 1943.

Question: Ernst Stuhlinger developed which kinds of systems with the man who invented the V-2 rocket?
Answer: guidance systems