Below is one high profile victim of II./JG 27 apparent strafing of the crash-landed Allied aircraft from the days of North African campaign...
https://en.wikipedia.org/wiki/William_Gott
The event was commemorated on the cover of John Weal's book Jagdgeschwader 27 'Afrika' - this though might have been the execution of a highly ranked Allied commander, somewhat like the USAAF shooting down Admiral Isoroku Yamamoto's aircraft
https://en.wikipedia.org/wiki/Isoroku_Yamamoto