The B-25 bombers of the 340th Bombardment Group stationed on Corsica hit (or tried to hit) the arifield at Valence/La Tresorerie on August 20, 1944.
It was not their finest moment. They missed.
See:
http://57thbombwing.com/340th_Histor...44_Valence.htm
For the target photos, mission report and war diary entries.