@JubalBarca @histodons @medievodons these kinds of questions are of active concern to oral historians, so that is definitely an area where you’ll find some research on the subject, though you may be unsatisfied by its “scientificness” as historical techniques use a different set of methodologies
In particular I’d look into Alistair Thomson’s Anzac Memories which deals heavily with how people’s own recollections were shaped by the collective understanding of the war, and how that changed over time/from context to context