Operation ICEBERG, the campaign for the Ryukyus and the Keramas, was the largest naval campaign conducted in the Pacific theater during World War II. ICEBERG was one of five major amphibious operations that collectively represent the evolution of amphibious doctrine over the course of the war. Guadalcanal (8- 9 August 1942), Tarawa (20 November 1943), Leyte Gulf (24 October 1944), and Iwo Jima (19 February 1945), as precursors to the ...