What do you mean by, it was intended that way? Are you trying to suggest the engineers at Junkers developing the Stuka wanted to create a device that would create the Wilhelm scream of plane sounds for movies?
As for the Luger, the P08, while iconic, was considered obsolete by WW II and was rarely carried by German troops, officers or other. More common was the Walther P38 even if the Luger was better known. Also, I don't think that any German officer carried a C96 during WW II, it was already largely obsolete by WW I and would have been completely obsolete by WW II. Most officers (in all militaries) only carried a pistol as a badge of rank and because they were required to, with that being the case, why would anybody carry as large and clunky a pistol as the C96 just for appearances when there smaller and better pistols out there?