Question: What was the codename for the battle where the 9th Amphibian Tractor Battalion supported the 6th Marine Division?
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