Watch 20 Days in Mariupol

Robert McNamara's eleven lessons on Vietnam and Cuba; Errol Morris's Interrotron interview.

John Ford filmed the battle from the roof of a power station and was wounded doing it; eighteen minutes of 16mm colour.

RKO’s post-war explanation of Japan, written by Theodor Geisel - Dr. Seuss - before he wrote for children.

Australian newsreel from the Kokoda Track in New Guinea, shot by Damien Parer, who was killed two years later.

The Soviet account of the counter-offensive that stopped the Wehrmacht outside Moscow, re-cut for American cinemas.

The first of Frank Capra’s Why We Fight films, made to explain to conscripts what they were being sent into.

The British account of El Alamein, cut from footage shot by cameramen who went forward with the infantry.

A year aboard an American aircraft carrier in the Pacific, filmed in colour by the crew themselves.