The Allied Invasion Order refers to the strategic plan formulated by the Allied forces for the invasion of Nazi-occupied Europe during World War II, culminating in the D-Day landings on June 6, 1944. This plan was pivotal in coordinating the efforts of multiple nations, including the United States, the United Kingdom, and Canada, to establish a foothold in Western Europe, which would ultimately lead to the liberation of France and further offensive operations against Germany. The invasion was meticulously planned and involved extensive logistical preparations, intelligence operations, and deception tactics to ensure its success.