On 10 August 1944, at the place named "Le Sablon", commune of Mezieres-sous-Ballon, a column of the 2nd French Armored Division that was advancing to cut the axis Falaise-Argentan-Alencon was fired on by German 88 PAK guns and/or Jadgpanthers. The 12eme RCA lost to German fire three Sherman destroyed, 7 killed, several wounded and 2 POWs. Air support was asked and US Thunderbolts provided it.
But one of the US fighters dropped his two bombs on a French tank, the Shermann "Labourd" who was stopped on the road and had not displayed the orange identification panel. The tank was hit and took fire: three crew (Marechal des Logis Alexis Labord, Chasseur 1ere classe Roland Courty, Chasseur 1ere classe André Bournbonville) were killed with two other men: Chasseur René Viraize who was standing near the bombed tank and chasseur Casimir Bordes who was driving an half-track behind the tank.
Source:
http://12rcahistorique.canalblog.com/