Many in the United States have heard about how Germany (and maybe about how Italy) had to do a lot after World War II in order to deal with the residual effects of their actions during the war. It's also worth looking at how Japan had to do the same. Kon Ichikawa's "Biruma no tategoto" ("The Burmese Harp" in English) does a good job with this.

In July, 1945, a Japanese platoon in Burma gets captured by the British army. One of the men - named Mizushima - has to go to the mountains to convince another Japanese platoon to surrender. But the latter platoon refuses to do so and all the members get killed in a shootout. As Mizushima walks back to his platoon, he comes across the bodies of more soldiers who perished in the war. Thus he sees his new mission in life: no longer can he be a soldier, but becomes a Buddhist monk, with the aim of healing all affected by the war.

I see Mizushima as representing what Japan as a society had to do following its defeat in WWII. Aside from the fact that the Land of the Rising Sun has had to be a pacifist country (the US forced it to have a constitution prohibiting military intervention), the bombing of Hiroshima made the Japanese people averse to militarism in general. Certainly this movie's anti-war stance makes it all the more relevant in this day and age. I recommend it.