Twenty-six <a href="https://en.wikipedia.org/wiki/Junkers_Ju_87" id="mwAUg" rel="mw:WikiLink" title="Junkers Ju 87">Junkers Ju 87</a> bombers commanded by <a href="https://en.wikipedia.org/wiki/Walter_Sigel" id="mwAUk" rel="mw:WikiLink" title="Walter Sigel">Walter Sigel</a> meet unexpected ground fog during a dive-bombing demonstration for Luftwaffe generals at <a href="https://en.wikipedia.org/wiki/Świętoszów" id="mwAUo" rel="mw:WikiLink" title="Świętoszów">Neuhammer</a>. Thirteen of them crash and burn.