translate English to French: On account of the inaccuracy of the smooth-bore musket, the attackers were relatively free of casualties until they reached a point eighty to 100 yards from their objective.
Compte tenu de l'imprécision des fusils à âme lisse, les attaquants ne subissaient pratiquement aucune perte jusqu'à environ 80 à 100 verges de leur objectif.