Japan has had a long history of warfare, with notable victories such as the Satsuma Rebellion (1877) and the Russo-Japanese War (1904-1905). In World War Two, Japan was defeated by Allied forces in 1945. Since then, it has focused on rebuilding its economy rather than engaging in military aggression and expansionism. Depending on how you define “winning” a war, there are examples throughout its history where Japan can be said to have emerged victorious or suffered defeat. Ultimately though, it appears that Japan has been able to remain independent and stable since WWII without becoming embroiled in further large scale conflicts - something which can be seen as being a success in itself.