Ho-163
The Heinkel He 163, a German rocket-powered interceptor aircraft that was deployed towards the end of World War 2. It was designed for speed and was capable of reaching high altitudes but was limited by its short range and fuel consumption.
Dg. 26 The B-29 Superfortress
A four-engine heavy bomber used by the United States Army Air Forces during World War II. The B-29, capable of carrying a heavy payload and flying at high altitudes, was instrumental in the strategic bombing campaigns against Japan, including the atomic bombings of Hiroshima and Nagasaki.