Events Leading Up to D-Day 1941-1944
The world was in constant flux during World War II (1939-1945). During this time, Germany, Japan, and Italy formed the Axis while the Allies were composed of Great Britain, France, Russia and later, in 1941, the United States. In 1940, Germany invaded and later captured France, thereby cutting off land needed for a possible invasion by Allied forces.
During this time, President Franklin D. Roosevelt started planning an invasion that would liberate France and provide support for Russia. Until 1943, the Allies had a tough time planning an invasion through the English Channel due to Germany's numerous submarines. With most of Germany's submarine forces vanquished by 1943, the Allies began investing in a plan that would liberate France.
In 1944, General Dwight Eisenhower was appointed as the commander of the invasion forces, which would lead to the creation of Operation Overlord. It would take several months to plan and allow the events of D-Day, WW2's largest invasion, to take place.