The Battle of Quebec was preceeded by a three month siege. The French forces were led by Louis-Joseph, Marquis de Montcalm, the British by General James Wolfe. The British fleet was able to move up the St. Lawrence with relatively little impunity due to inability of a French fleet to reinforce after meeting disaster at the Battle of Cartagena off the coast of Spain. While Wolfe's camp was some ways downstream from Quebec at the Falls of Montmorence (Montmorency), his subordinate, Monckton, was able to establish artillery on Point Levis (Levy on this map) across from Quebec and bombard the city. Montcalm had a superior defensive position and would not budge despite British attempts to draw him into battle.
On the night of September 12th, Wolfe initiated a risky landing upstream of Quebec (left side of the map). A small group of soldiers scaled the bluffs and took out the sentries. Wolfe's troops quickly disemarked and climbed up the bluffs. By dawn, the troops were assembled on the Plains of Abraham. Montcalm had believed such a manuever to be impossible, saying that 100 men could hold off an army until daylight.
The English formed a line from one side of the peninsula to the other. At about 10AM, Montcalm, riding a black horse, ordered a general advance. Both sides held their fire. The French finally unleashed two unorganzied volleys. When the French had closed to 30 yards, the British unleashed two violent volleys that sent the French into retreat. During the retreat, Montcalm was struck by canister shot. he was able to make it back into the city where he died the next day. Wolfe, too, would perish. Mortally struck in the chest early in the battle, Wolfe died on the battlefield, but not before watching the French go into full retreat.
After Wolfe died, the British began a disorganized pursuit of the French. Brigadier-General George Townshend, knowing that French reinforcements were coming up behind, reorganized two battalions to face the new threat. Bougainville, inexplicably, decided to retreat rather than battle the British. It was six more days before the city fell to the British, but its fate had been sealed. It was almost four more years until the war was over, but the Battle of Quebec was the deciding battle.