Before paragraph time, the crash of F-35 opportunity for combat that Japanese militia buys. This also is the first F-35 opportunity for combat of Japanese crash. In recent years since, japanese right-wing force sounds ceaselessly. The directest expression is, japan " military strength " growing ceaselessly. If had made the number on the world originally now,not much 4 acting chance have a state. So why should it introduce F-35 opportunity for combat of the United States? To Japan, purchase F-35 opportunity for combat from the United States, those who attribute high additional cost army buy a plan. Set out from martial angle, f-35 opportunity for combat can promote Japanese aviation militia fighting capacity quickly. Set out from two countries angle, japan introduces F-35 opportunity for combat, also be to promote beautiful day relation to stabilize important step. After all army buy can reflect more each other is believed between two countries. Japan introduces F-35 opportunity for combat, still can learn as invisible as referenced United States concept of design of opportunity for combat and technical characteristic. Although Japanese industry developeds, but aviation technology does not have banner world, do not have research and development invisible ability of opportunity for combat. Prospective 5-10 year less than, japan solves these problems unlikelily. Because this F-35 opportunity for combat is right,day says originally, it is a better study reference thing. Before introducing F-35 opportunity for combat, japan has been had be modelled on the precedent of beautiful type opportunity for combat. F-2 opportunity for combat of Japan, the exterior is exactly like American F-16 opportunity for combat. In fact, this opportunity for combat is modelled on namely American F-16 opportunity for combat, next research and development and piece. In process of research and development, the United States offers 300 multinomial and relevant technologies to Japan, stimulative Japan aviation makes industrial progress. However invisible opportunity for combat, the United States appears special " persnickety " , a lot of and main technique of F-35 won't be offerred external with craft. Because this has level, japan cannot be in invisible materiality breakthrough is obtained on research and development of opportunity for combat. But future depends on F-35 faithful user setting, always can acquire a technology from the United States. The place on put together is narrated, japan introduces F-35 opportunity for combat, really the sense is extraordinary.