Question: The unit formed in 1936 featured what type of aircraft designed by Siegfried and Walter Gunter?
Context: "Lehrgeschwader" 1 (LG 1) (Demonstration Wing 1) formerly "Lehrgeschwader Greifswald" was a Luftwaffe multi-purpose unit during World War II, operating fighter, bomber and dive-bomber "Gruppen".  The unit was formed in July 1936 and operated the Messerschmitt Bf 109, Messerschmitt Bf 110, Dornier Do 17, Heinkel He 111, Junkers Ju 88 and Junkers Ju 87. The Heinkel He 112 is a German fighter aircraft designed by Walter and Siegfried Günter.  It was one of four aircraft designed to compete for the Luftwaffe's 1933 fighter contract, in which it eventually came second behind the Messerschmitt Bf 109.  Small numbers were used for a short time by the Luftwaffe, and small runs were completed for several other countries, but only around 100 were completed in total. The 66th Armor Regiment is the oldest armored unit in the United States Army (see Iron Knights: the United States 66th Armored Regiment, by Maj. Gordon A. Blaker), tracing its lineage to the 301st Tank Battalion which served with distinction soon after it was formed in the First World War; the 301st trained at Camp Meade, MD, where then Cpt.  Dwight D. Eisenhower was an instructor.  It has often been rumored that the 301st, the parent unit of the 66th, was first commanded by Col. George S. Patton, but this appears not to have been the case; while Patton was the first officer assigned to the Tank Corps, and while the 301st Tank Battalion was the first unit formed, Patton went nearly immediately to France to train Americans attached to Allied commands.  The 301st was the only American heavy tank battalion to have seen action in the war.  After the war, the 301st transitioned in the Regular Army to become the 66th Infantry Regiment (Light Tanks) by way of the 16th Tank Battalion. The RAAF Washington Flying Unit was a temporary Royal Australian Air Force (RAAF) unit formed to ferry Australia's first twelve General Dynamics F-111C aircraft from the United States to Australia.  It was formed in March 1973 and disbanded in July of that year after the ferry flights were completed. The Black Swans (Bosnian: "Crni Labudovi" ) was a paramilitary unit and special forces unit in the Army of the Republic of Bosnia and Herzegovina.  It was a "Patriotic League" unit formed in 1992 in Sapna under the 2nd Corps (later 1st Corps), which eventually numbered 800 men.  It was one of several special Bosnian Muslim units.  It earned a reputation for battlefield bravery.  The first commander Senad Mehdin Hodžić was a former member of the Special anti-terrorist unit of the Yugoslav Ministry of Internal Affairs (MUP), when he took the command of the Black Swans he would be known as "Kapetan Labud" or Captain Swan.  Then Captain Hajro Mešić took over for a while.  The most successful and lasting commander was Brigadier Hase Tirić.  The area of operation was Konjic, Igman and Jablanica.  Black Swans wore black uniforms with a unit patch on the sleeves and the ARBIH patch on the other sleeve. No. 1 Long Range Flight was a temporary Royal Australian Air Force unit formed to participate in the 1953 London-to-Christchurch air race (also known as the Christchurch Centenary air race).  The flight was established in February 1953 and was equipped with three Canberra bombers, specially modified between June and August.  Following extensive training, two Canberras departed for the UK in mid-September.  The race began on 9 October, and one of the flight's aircraft placed second, with a total flying time of 22 hours and 29 minutes.  The other aircraft was forced out of the race when one of its tyres burst while landing at Cocos Island to refuel, but completed its flight to Christchurch after being repaired.  After a brief period in New Zealand both aircraft returned to Australia to be modified back to a standard configuration, and the flight was disbanded in November. The Heinkel He 111 was a German aircraft designed by Siegfried and Walter Günter at Heinkel Flugzeugwerke in 1934.  Through development it was described as a "wolf in sheep's clothing" because the project masqueraded the machine as civilian transport, though from conception the Heinkel was intended to provide the nascent Luftwaffe with a fast medium bomber. Heinkel's He 112 was a fighter aircraft designed by Walter and Siegfried Günter.  It was one of four planes designed to compete for the Luftwaffe's 1933 fighter contract, which was eventually won by the Messerschmitt Bf 109.  Small numbers of the He 112 were used for a short time by the Luftwaffe, and small runs were completed for several other countries, but less than one hundred were completed in total. Z ( ) Special Unit—also known as Special Operations Executive (SOE), Special Operations Australia (SOA) or the Services Reconnaissance Department (SRD)—was a joint Allied special forces unit formed during the Second World War to operate behind Japanese lines in South East Asia.  Predominantly Australian, Z Special Unit was a specialist reconnaissance and sabotage unit that included British, Dutch, New Zealand, Timorese and Indonesian members, predominantly operating on Borneo and the islands of the former Netherlands East Indies. An interceptor aircraft, or simply interceptor, is a type of fighter aircraft designed specifically to attack enemy aircraft, particularly bombers and reconnaissance aircraft, as they approach.  There are two general classes of interceptor: relatively lightweight aircraft built for high performance, and heavier aircraft designed to fly at night or in adverse weather and operate over longer ranges.
Answer: German aircraft