Question: What was the first military aviation unit to use an unpowered precision guided munition in a war that involved more than 100 million people from over 30 countries?
Sentence (from "World War II"): World War II (often abbreviated to WWII or WW2), also known as the Second World War, was a global war that lasted from 1939 to 1945, although related conflicts began earlier.
Relevant evidence: No