Japanese Defense Minister Yasuo Ichikawa announced that he will send about 200 troops to the new country of South Sudan in 2012. They will take part in UN peacekeeping operations.
Interestingly Ichikawa said the international community has been asking Japan to take on more UN peacekeeping roles, however I’ve not noticed any mention of that in all the international media sources I keep track of. It’s probably more that the United States, in spreading its own military so thin, is putting pressure on Japan to take on more international military roles (also, payback for all the free U.S. aid in dealing with Japan’s on going nuclear disaster).
Japan’s current constitution does not allow their troops to carry weapons in other countries, but the new right wing government is trying to change that.
Most of the 200 Japanese troops slated to go to South Sudan are engineers.