Tony,
No, I think you have it right. Don't you remember reading of Nelson's accompanied singing to his crew on the gun deck of the Victory between battles? I think more than one log referred to the Admiral's 'slick calypso strumming, and the two songs which appeared favourite amongst the men were, 'Meh Lover' and Disco Daddy' '! (It was pretty obvious who the first one was about!) Even Captain Hardy had been known to tap his foot to the rhythm. They were popular on the West India run in '05, I believe. No?

It would seem as though I was taught more history than you were then, since I remember we were taught about the First World War (although, like most people, I still don't know what it was all about!) and Russia during the early twentieth century (these were real sleep-inducing lessons!)
Seriously though, there is something very wrong with the teaching of history these days, or rather the not-teaching of it, and it is very sad indeed. Someone once said, it may have been Churchill, words to the effect that, a country that has no interest in its past, has no future. I think this is very true. I agree too, that history shouldn't be taught in 'modules' but rather as a progression, which is what it is, and how I remember we were taught. Thus I seem to remember we studied every period, beginning with the earliest. In that way I think children are not confused by chopping and changing around between periods, and they can see it not only as a logical progression, but one into which they, and the world today, fit.
Regarding the Second World War, I think the time is fast approaching when even that period will not be a living memory, and children won't have a grandfather who served in it. So what happens then – out of site, out of mind, perhaps. I think a radical re-think about the way history is taught is needed, and before it's too late.
The fact that there are so many historical films made, must highlight the fact that people are interested in history, even if it's only on the light costume drama level – just look at the popularity of Downton Abbey. That and a few others apart though, it's a shame that film directors choose to distort history for their own convenience. This means that for those who don't want to delve into books about the period, have a somewhat distorted view of it. I am sure though that many have their appetite whetted and start reading, and probably relearning, about what they have just been watching.
Anna, I not so sure that the two world wars were the first to involve the whole country. I would have thought that the Napoleonic Wars (the original Great War) also did that, certainly through conscription for the army and navy, and also through war production. No one could have been unaware of it and probably most knew of someone who was intimately connected with it in some way. There was also the threat of invasion. Even on a superficial level in Jane Austen's world, the 'officers' who were such a favourite (although they were usually likely to be militia) would most likely in reality have been on a war footing. As we know, Jane herself had two brothers in the navy.