Every writer has his writing technique - what he can and can't do to describe something like war or history. I'm not good at writing about those things, but I try because I feel it is necessary to write that kind of thing.
My father belongs to the generation that fought the war in the 1940s. When I was a kid my father told me stories - not so many, but it meant a lot to me. I wanted to know what happened then, to my father's generation. It's a kind of inheritance, the memory of it.