BATTLE OF INFORMATION BETWEEN JAPAN AND U.S. UNDER THE BATTLE OF OKINAWA-A CASE STUDY OF CODE AND PSYCHOLOGICAL WARFARE

2006年3月，我们发表了一份报告，题目是《冲绳战役下的日美信息战--代码与心理战的案例研究》。这份报告长达236页，是A4大小。它由两部分组成。第一本是一本纸书，另一本是关于我们主题-冲绳战役的材料。在前者中，Hosaka出版了《冲绳战役下的日美法典之战》。Hirofumi Hayashi讲解了“冲绳战役下美国心理战的研究课题”，Kaname Higa谈到了“冲绳战役下美国宣传传单的目的和效果”。在研究经费的补贴下，我们整理了日本和美国军方都拥有的资料。同时，通过这项研究，我们有以下几点认识。首先，冲绳战役是一场充分利用现代密码的全面战争。当时的战场上，军民混杂。尽管“间谍”一词随着怀疑的出现而泛滥，但它发展出，事实上，监视和违反日本军队的代码才是真正的原因。这一点可以从Hosaka所报道的关于密码战的研究中看出。其次，林博文提出了美军在冲绳的心理战历程和上层组织分析。他还提出了关于主题的问题。最后，Kaname Higa谈到了美国军方对日本进行的战略和战术宣传。他通过观察冲绳战役的动向，用实物实现了这些目标，通过我们的合作，我们可以开辟冲绳战役研究的新天地，收获丰硕的成果。

In March of 2006, we published a report, the title of which is "Battle of information between Japan and U.S. under the Battle of Okinawa-A Case Study of Code and Psychological warfare". The report runs to 236 pages and is A4 size. It is composed of two parts. The first one is a book of paper, and the other deals with materials for our theme-the Battle of Okinawa. In the former, Hiroshi Hosaka publishes "the Battle of Code between Japan and U.S. under the Battle of Okinawa". Hirofumi Hayashi treats "the Studies subjects about U.S. Psychological Warfare under the Battle of Okinawa" and Kaname Higa touches "the Aim and Effect of U.S. Propaganda leaflet under the Battle of Okinawa". With a subsidy for research expense, we compiled those materials which had been possessed by both of Japan and U.S. militaries.In the meantime, there are perceptions through this research as follows. First, the battle of Okinawa was total war making the best use of modern Code. Army and Civilians mingled in the battlefield at that time. Although the word, "Spy" overflowed as suspicion raises bogies, it developed that monitoring and breaking a Code of Japanese military was the exact cause as a matter of fact. It can be seen in the study on Code warfare covered by Hiroshi Hosaka. Secondly, Hirofumi Hayashi advances the course of U.S. Military's psychological warfare in Okinawa and analysis of upper organization. He also raises questions as to theme. Finally, Kaname Higa addresses the propaganda of strategy and tactics conducted by U.S. military against Japan. He achieves them with observing the movement of the battle of Okinawa and using actual articles.Through our collaboration, We could break new ground of research into the battle of Okinawa and reap a rich Fruit.