In September, Franklin D. Roosevelt welcomed Winston Churchill to Quebec for the Octagon Conference, a significant strategic meeting during World War II. This gathering brought together key military leaders from both nations. The primary focus of this conference was the coordination of Allied operations, particularly against the German forces in Europe and the ongoing efforts in the Pacific Theater. Roosevelt and Churchill discussed the progress of military campaigns, tactics, and future operations, including the liberation of France, which had recently been achieved, and plans for the invasion of Germany. They also deliberated on the integration of different military forces and the need for a unified strategy.

The Quebec Conference was critical not just for the military strategies that emerged, but also for strengthening the personal rapport between Roosevelt and Churchill. They recognized the importance of solid communication and collaboration among Allies as the war approached its latter stages. Additionally, discussions extended to issues like maintaining supplies and resources for war efforts, as well as post-war planning scenarios to ensure stability in Europe following the Axis defeat.

The conference resulted in several agreements and strategic outlines, significantly influencing Allied military operations in the months to come. As both leaders emphasized a commitment to the United Nations' formation for post-war governance, they laid groundwork for international cooperation beyond the war. The Quebec Conference represented a turning point in the shared vision between the United States and Britain, aiming for a coordinated and comprehensive approach to achieving a victorious outcome in World War II.