The First Québec Conference convened leaders from the United Kingdom, the United States, and Canada, featuring Winston Churchill, Franklin D. Roosevelt, and William Lyon Mackenzie King. Held in Québec City, this pivotal meeting occurred from August 17 to 24, 1943, amidst the strategic dynamic of World War II. The necessity for the Allies to present a unified front against the Axis powers was underlined by the successes of German forces in Europe and the need for joint military operations. Upon arrival in Québec, the leaders were met with military honor, recognizing the importance of their international collaboration.

During the conference, prominent discussions included the military campaign in Sicily, which had recently commenced, and plans evolving from that campaign to the liberation of mainland Italy. The leaders deliberated the timing and specifics of a massive invasion of Europe, signaling the eventual plans for Operation Overlord, the Allied invasion of Normandy set for the following year. Moreover, the conference allowed the leaders to assess the military situation in the Pacific and evaluate strategies against Japan.

Notably, this gathering was also a chance for personal rapport, as Roosevelt and Churchill had established a strong working relationship from earlier engagements. Their camaraderie was complemented by King’s vital contributions, representing Canadian interests and affirming Canada's role as a significant player in Allied military strategy. The conference also included discussions on the broader geopolitical implications of the war, thereby setting the groundwork for post-war planning.