yes it was
It was the largest and most devastating war in human history.
The largest naval battle in history.
"Operation Overlord" .
The Royal Australian Navy had the Fifth largest navy in the world at the begginning of World War 2.
I wouldn't call any war "great" but WWII is the largest war in history in terms of of area of the world affected and people involved, and the worst in terms of the number of casualties.
no
World War II holds the distinction of being the only war that used a nuclear weapon. It was a war that involved virtually every part of the world during the years 1939 to 1945. It was also the largest and bloodiest war in history.
Yamato
no
World War II is the deadliest war in history.
Auschwitz