I apologise if I've offended you Jabberwok. What word would you have preferred? The point I was making was that both my father and his brother were RAF pilots. My uncle, who also flew in the Far East, was injured too. My father was only 18 when he signed up and being a bomber pilot was extremely dangerous. Of course I know what they did!
I know about the logistics of invasion as a result of my grandfather's job. He worked directly with Churchill and I remember, as a child, listening to long discussions about war strategies. If I didn't understand, my father would clear the coffee table and use ornaments to explain various battle fronts to me. We had model aircraft all over the house, hanging from ceilings, and I could identify most of them. That's what I meant by "stuff".