Official Histories of the Second World War
The transcribed name of the official Japanese history of the Second World War is “Senshi Sosho”. Its a monumental work, covering virtually all aspects of the war except the Japanese war crimes. The Senshi Sosho totals 102 volumes that consist of 34 volumes on the Imperial General Headquarters, 37 volumes on the Army, 21 volumes on the Navy, nine volumes on the aerial war the Army and one volume of chronology.
The fifty volume series covers all areas of New Zealand’s involvement in the Second World War, from detailed accounts of particular battalions, to the political and economic background and consequences, to full accounts of particular episodes and campaigns.
United States Army
United States Army Air Force (“Craven and Cate”)
United States Marine Corps
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and some (very few) British and Indian histories can be found (html) at Hyperwar