Battle of Crécy
The bolts (heavy arrows) of the Genoese crossbowmen at the forefront of the battle could not reach the English. They fell short because the  crossbow strings were wet. The archers had also misjudged the range and shot too early and too low. The English, controlling the high ground, were able to run a short distance down the hill and pick off the Genoese with volleys of arrows. As the Genoese attempted to retreat, they were cut down by the French knights, who thought the withdrawal was cowardly. This wasted the first charge of French cavalry, and left them disorganized for the charge on the English.