The Battle of Tarawa was a significant World War II battle fought between November 20 and November 23, 1943, in the Gilbert Islands, where U.S. Marine Corps forces attempted to capture the heavily fortified island of Betio from Japanese defenders. This battle marked one of the first major amphibious assaults in the Pacific Theater, demonstrating both the ferocity of Japanese resistance and the determination of U.S. forces to secure strategic locations for further military operations against Japan.