There were two separate cases of friendly fire bombing of Allied troops on 7/8 August 1944. In the first, which happened near May-sur-Orne, the bombing pattern was scattered. The following extract from No Holding Back, p. 204 should be of interest,
"This time, with hundreds of tons of bombs due to fall on the village, the Fusiliers Mont-Royal would attack without the support of either, relyig on the bombing to destroy the enemy resistance. The reliance on air power was misplaced because May-sur-Orne
appeared to have received only a slight attack; some bombs had obviously fallen in the fields near St. Martin de Fontenay to the north of the target but even so the number of craters was nowhere near the 1112 which was te number of bombs said to have been used in this attack.