I haven't seen those - but probably the best programme of that sort that I have seen is the first episode of "Our War" - a BBC series screened a few years ago now. Pretty moving stuff. You can see it (and other episodes) on YouTube:
https://www.youtube.com/watch?v=DYvHiDMMtOw
I think there has been a thread on this sort of programme way back when this episode first screened.