Wow, a great question.
When i was studying at a university, we had debates in history class about the war - the positive and negative sides. I had to defend the point of view that war is good.
Well, it looked challenging, but turned out that throughout history war was moving progress ahead and a good portion of inventions and progress first came as war weapons or as aid for armed forces. Later they were converted to peaceful goals. Medicine, machines, explosives and so on.
I know that is not the question of this topic, but you know this old saying: "the right one is the one who won", because you know, the winning side has to write the history. So I guess war or any conflict is inevitable - like it is inevitable that animals eat each other. Maybe there will be beter ways to solve conflicts than killing each other in future - I hope so.
Soviets and japanese both had their verisions of history - where they were very right.
Maybe UN is the good side - but it is not the side at all)
I guess that's a good point. I was just thinking of the effect of war during a war. There certainly have been some good technologies developed for war. I found a list of some technologies developed during WWII. They include the dynamo-powered torch, the Jerrycan, pressurised cabins in planes, penicillin, radar, jet engines, nuclear power, and computers. There are all very important developments. For some reason, it doesn't seem like militaries are making as many breakthroughs as they used. Is this true? What technologies have been developed recently "thanks" to war?