Can you tell me about the geography? 
 Any special rivers or lakes? 
 Japan's military is called JSDF, the Japanese 
 I don't know if there are mountains but on the most populous island - Honshu - there is heavy snow due to northwest winds on the west coast. 
 I don't know about lakes and rivers but Japan is comprised of 6,852 islands so there's lots of water to be found!
Japan's military is called JSDF, the Japanese