It starts at school and if TV is used as the basis to engage children’s’ interest then they will “go forth” confused, particularly as many parents will be unable to help them towards the “truth”.
Oh What a Lovely War certainly had a seminal affect on large numbers of my generation at least those who had little in the way of 20th century history education. Countless war films of both world wars and others have had similar effects so peoples’ view of the “truth” is confused. Depending on what the “truth” is of course.
And reading any number of historian’s accounts will not be a great help either.