A saucer u say ?
Well they've built a lot of 'em. Haunebu and Vril series. They had electro-magnetic engines or smthing like that.
http://www.naziufos.com/ <-- piloted V-2, sound cannons etc.
It's just sick how brutal ideas they had and even more sick is they actually made a lot of these concepts.
It's more a curse than the shame >:(