'Tunnel War', also known as 'Tunnel Warfare', is a 1965 Chinese film about a small town which defends itself from the Japanese by use of a network of tunnels during the Anti-Japanese War. The film was directed by Ren Xudong and produced by the August First Film Studio.

Tunnel War

It is considered to be one of the first movies to discuss the use of tunnels in war.

While the film was popular upon its release in 1965, its popularity would not peak until nearly a decade later, when it became of one of the 'Three Old Fights', a collection of three war films that were given wide circulation during the cultural revolution (1966-1976) — the other two films were 'Warfare of Landmine' (1962) and 'Fighting North and South' (1952).