what do you mean? You’re not up to speed on Nazi UFO’s? Everybody knows about Nazi UFO’s! They spread chemtrails don’t they? ROFL. I don’t know anything about Nazi UFO’s either lol ;)
In the lore there was a story of them acquiring the remains of some type of craft in one of the Nordic countries, IIRC around 1936, and that it was a significant boost to them technologically in the areas of metallurgy and aerodynamics.