Breach of international rules of war?

this true colors, if a british USA plane with german crosses on it, went over germany, on recon,and was shot down or crash landed, or what ever and the crew survived wouldnt they be shot as spys,as i heard a british pilot dicky lee in may 40 bailed out,in german lines , the germans were going to shoot him , as he was wearin his RAF overcoat, on thats all,no RAF<uniform,
but casuallly dressed,looky for him a german interrigator believed him,he then escaped back to his lines, but was killed" in august 40 ,chasing me 110s out to holland,ALONE,
gary>>>.nice subject, ive never heard of before,