Brian,
Here are three examples known to me.
05/08/1944. Lysander V9748. Shot taken by mistake for a Henschel 126.
http://www.absa39-45.asso.fr/5%20aou...k_anglais.html
08/08/1944. Albemarle P1501. Shot dead in error by 604 Sqn (Mosquito). mistaken for a Do 217.
http://www.absa39-45.asso.fr/9%20aout%2044/aout44.html
P-47 D-5 RE, serial 42-8491. Strafed the HQ of General Patton in Mayenne. It was shot for an anti-aircraft battery of 20 mm. Its pilot 1st Lt. Louis Alphonse G (KIA).
http://www.absa39-45.asso.fr/P47/p47.html