Question: What year was the the U.S. Third Army undertaking the Lorraine Campaign during World War II while the U.S. Fifth Army was engaged in Operation Diadem?
Sentence (from "Lorraine Campaign"): Lorraine Campaign is a term used by U.S. Army historians to describe operations of the U.S. Third Army in Lorraine during World War II from September 1 through December 18, 1944.
Relevant evidence: Yes