Jericho Trumpets

Jercho Trumpet was a name given to the sirens on the bottom of Junkers Ju 87 Stukas.
They were boxes with a small propeller mounted near the landing gear. The idea was to demoralise allied troops and inflict psychological trauma.

Allied Troop: Jesus Christ, you hear those Jericho Trumpets?Allied Troop #2: Yeah, it's a death sentence when you hear that.