My DD has developed an interest in both world wars. I think she will take History GCSE next year. She keeps looking for documentaries on them but is never very satisfied because they all seem to take an angle on something previously unknown about them. She just wants an introduction.
She's not at all bookish, so I don't think she'd read anything weighty but it also might be a good way to get her to read.
Documentaries would be great because DS 11 is interested too and we could watch them together.