Answer
The Twelfth Air Force, headquartered in Italy during World War II, served as the training ground for Paul Tibbets, famously known for his role as the commander of the 509th Composite Group, which later dropped the atomic bombs on Hiroshima and Nagasaki. Before assuming this momentous responsibility, Tibbets gained valuable experience and honed his skills as the assistant for bomber operations at the Twelfth Air Force.