The 78th Infantry Division, also known as the "Lightning Division," is a unit of the United States Army that was activated during World War I. It was formed in 1917 and saw significant action in Europe, participating in key battles such as the Meuse-Argonne Offensive. The division was deactivated after the war but was reactivated during World War II. During World War II, the 78th Infantry Division played a crucial role in the European Theater, particularly in the Battle of the Bulge and the Rhineland Campaign. The division was known for its resilience and effectiveness in combat, contributing to the Allied victory in Europe. It was inactivated after the war but has a storied legacy in U.S. military history.