8. Heinkel He 177 (Germany)
The He 177 was a heavy bomber used by the Luftwaffe during the Second World War. It was introduced late into the war in 1942, but built in great numbers once its effectiveness was realized. Almost 1,700 He-177s were built by the Germans throughout the war.
The bomber was designed mainly for long-range missions giving it a whopping payload capacity of 32 tons at a rage of 5,600 km. Therefore, this was a bomber similar to the ones used by the US to penetrate deep inside German lines. It could operate at 565 km/h at 6 km elevation and made into several variants to serve according to the requirements.
It was a commonly held myth during the war that a special prototype had been developed based on the He-177 called the V38 to deliver a droppable atomic bomb. However, this never materialized as the Germans never succeeded in their nuclear program.
The bomber was mostly used on the Eastern front against hidden Soviet war industry in the Urals.