Fires Were Started
Fires Were Started is a 1943 British film written and directed by Humphrey Jennings, filmed in documentary style, showing the lives of firefighters through the Blitz during the Second World War. The film uses actual firemen including Cyril Demarne rather than professional actors.
Film critics mostly praised the film for its realism and documentary value, despite its reconstructions. Dilys Powell, of the Sunday Times declared its authenticity to be moving and terrifying.
Source: Wikipedia