French cannons lined the walls from the city down towards the St. Charles river (Thwaites, p. 246) and had been used to fire on Wolfe's boats as they moved between their camps at Pointe Levis and Montmorency.
When Montcalm realized that Wolfe's army was assembled on the Plains of Abraham, he requested 25 guns from the governor of the fortress - only 3 were given to him.
After the initial battle, Townshend reformed his troops (English) on the Plains of Abraham and with the use of a second cannon that had been dragged up, opposed Bougainville who had arrived on the scene from the west. Realizing that Montcalm's army had been forced off the Plains, Bougainville and his men retreated.
Today cannons stand guard overlooking the St. Lawrence from the Plains of Abraham area as well as areas within the walled city. Most were placed on duty during the War of 1812-14, however there was never an occasion to use them. Today they are a reminder of the battles fought during the French and British power struggles of the mid 1700s and the subsequent language struggles that still exist between French and English.