Eighty years ago the Pacific war turns decisively against Japan with the invasion of Saipan and the associated naval action
The Americans launched the invasion of Saipan in the Mariana Islands with an assault by two divisions, one Army one US Marines. This was roughly the same size as the defending forces, also two divisions although US intelligence underestimated this badly. The garrison's land based air support was wiped out before the landings took place and the US Navy could bombard Japanese defence almost at will. The Japanese fought on fanatically. Apart from the destruction of Japanese forces, the operation would secure Saipan as a base from which B-29 bombers could attack the Japanese home islands. The invasion drew the remaining strength of the Imperial Japanese Navy into a battle, the Battle of the Philippine Sea. The USN had a huge material superiority: 7 fleet carriers and 8 light carriers compared to the IJN' s 3 fleet and 6 light carriers. With 900 aircraft the Americans had double the number of carrier borne aircraft as the Japanese. The outcome was calamatious for the ...