Operation Barbarossa (German: ''Unternehmen Barbarossa'') was the codename for Nazi Germany's invasion of the Soviet Union during World War II that commenced on June 22, 1941. The operation was named after the Emperor Frederick Barbarossa of the Holy Roman Empire, a leader of the Crusades in the 12th century. It is not to be confused with the war on the Eastern Front in its entirety.
The Me 163 Komet was the only operational rocket fighter aircraft during WWII. It required a lengthy development process and entered the Second World War in a very limited fashion only in 1944.
Colonel Yuri Alekseyevich Gagarin (Russian: ???? ?????????? ???????, Jurij Alekseevi? Gagarin; March 9, 1934 -- March 27, 1968), was a Soviet cosmonaut who in 1961 became the first human in space and the first human to orbit the Earth.
The McDonnell Douglas F-4 Phantom II[2] is a two-seat supersonic long-range all-weather fighter-bomber developed for the U.S. Navy by McDonnell Douglas. The Phantom flew in U.S. service from 1960 to 1996; it also served with the armed forces of eleven other nations. As of 2001, more than 1,000 F-4s remained in service around the world.
The Arado Ar 234 Blitz (Lightning) was the world's first operational jet powered bomber, built by the Arado company in the closing stages of World War II. In the field it was used almost entirely in the reconnaissance role, but in its few uses as a bomber it proved to be nearly impossible to intercept.