Which island served as a jumping off point for several battles during World War 2?

The Solomons were the scene of intense fighting during WW 2.

The island of Palau was the scene of an intense battle during World War 2. The fight was between America and Japan both suffered great loses during the battle.

There were many. Some include: Oahu, Hawaii (Pearl harbor), Iwo Jima, Guadalcanal, Rabaul and New Ireland, Kokoda Track on Papua and New Guinea, Biak, Bougainville, Luzon, Corregidor, Hong Kong, Guam, Midway, Wake, Savo, Santa Cruz, Attu, Tarawa, Saipan, Noemfoor, Peleliu, Morotai, Leyte, Suluan, Dinagat, and Okinawa.