Question: Which battle included the largest amphibious assault in the Pacific War during World War II: Battle of Chosin Reservoir or Battle of Okinawa?
Sentence (from "Battle of Okinawa"): After a long campaign of island hopping, the Allies were planning to use Okinawa, a large island only 340 mi away from mainland Japan, as a base for air operations for the planned invasion of the Japanese home islands.
Relevant evidence: No