Using the definition "Nazi controlled Europe", I think that might have been the Invasion of Sicily in July of 1943.
Very simply, the need for the Allies to gain a foothold on European soil to enable them to begin the assault on Hitler's "Fortress Europe."j3h.
Sicily
The second front that the Allies opened in Western Europe during World War II was the Normandy invasion, commonly known as D-Day, which took place on June 6, 1944. This operation, codenamed Operation Overlord, involved a massive amphibious assault on the beaches of Normandy, France, and was aimed at liberating Western Europe from Nazi occupation. The successful landing marked a significant turning point in the war, allowing Allied forces to establish a foothold in Europe and begin advancing towards Germany.
The union began its assault on Mobile, Alabama on August 4, 1863.
in Germany
The raiding party made an early morning assault on the enemy fort.
Western europe
Three countries of Europe that begin with I are Ireland, Iceland, and Italy.
they attacked from the east
allied sttrength and weather
all of the begin with A and end with A except Europe
about 1790