The Pacific Theater of the Great Pacific War (Pacific Theater) was a theater of the Great Pacific War that referred to the war fought in the Pacific Ocean, its islands, and the Far East. To some extent, it included the western part of South America although it is widely accepted that the particular region belongs in the American Theater. It was one of the four theaters of the war, the others being the American Theater, the Caribbean Theater, and the Afro-Eurasia Theater. The theater was mostly fought between the signatories of the Sunshine Treaty Organization Pact and its allies versus the members of the United Pacific Aligned Coalition and its allies. The Deltoran Republic was originally involved in this front of the war, until the Caribbean Treaty Organization invaded Deltora.