The British were further cheered by the news that Amherst had taken Fort Carillon (after which it was renamed Fort Ticonderoga, as it is known today) and a second expedition had captured Fort Niagara. The French and their native allies were now under increasing pressure, compounded by guerrilla activities spearheaded by Britain's Mohawk allies and Rogers' Rangers. Despite the celebrated victory at Quebec, the campaign was not over—the French still had significant forces at large in North America swelled by refugees from the surrounding countryside. The following spring the French regrouped and launched an attempt to retake Quebec. The Battle of Sainte-Foy took place on 28 April 1760 and proved even bloodier than the previous battle. Though the French prevailed, the British were able to retreat into Quebec. The subsequent siege of Quebec lasted from 29 April until 15 May when British ships arrived to relieve the city which compelled the de Lévis to break off the siege and retreat.