Well Ruy, I think you're right!

Such stories were told already after the 1940 French Campaign (and possibly in Poland too). I read a book written by a former French tank crewman. He reported that their tanks were bombed by some (French) LeO 45 bombers used by German crews and he was very bitter about that. I consider this absolutely impossible because flying a modern bomber AC in combat is a very complex and very demanding task for which you need a lot of training. What's more, the LeO 45 was very tricky if you didn't know her, you simply had to be qualified on the type.

So there are two explanations : French crews flying LeOs were ordered to bomb some tanks near the frontline and so they did but unfortunately they attacked their own tanks. Such incidents did occur. Or the so-called "LeOs" were in fact Do 17s. Never ask an Army soldier to identify an aircraft! Even the French roundels sometimes were not enough to convince them that an AC was in fact French.

In his famous book Adolf Galland reported a bitter remark which was popular within the German Army (Heer) : "The Luftwaffe knows neither friend nor foe, they only know interesting targets".