Answer:
European Theater during World War II in North Africa, as part of Operation Torch.
Step-by-step explanation:
The U.S. first landed troops in the European Theater during World War II in North Africa, as part of Operation Torch. The operation began on November 8, 1942, with Allied landings in Morocco and Algeria, and marked the first significant involvement of American ground forces in the war against Germany. The objective of the operation was to secure the North African coast and establish a base from which to launch further operations against German forces in Europe. The landing was led by General Dwight D. Eisenhower, who would later become Supreme Commander of Allied forces in Europe.