THEY SHALL NOT GROW OLD is a documentary following the experience of British servicemen during WWI.

Injury detail

Scenes include footage and photographs of injured and dead soldiers displaying bloody injury detail. The colourisation of these images emphasises the detail, which is often accompanied by graphic verbal descriptions of the combat experience.

Occasional moderate sex references occur in which men recall visiting brothels, and there is also comic innuendo in an old song. Mild bad language includes use of 'bastard', 'bitches', 'bloody', 'bugger' and 'piss', and milder terms such as 'damn' and 'hell'.