In an 18 January 2008 article he wrote for
The Guardian to coincide with the film's re-release, Stuart Cooper described at length the creation of this film. He originally intended to make a
documentary about the
Overlord Embroidery tapestry. Cooper was told that it would take nine years to review all the footage in the collection, which included dangerous nitrate film stock. He wrote that after narrowing his selection, The Imperial War Museum and the
Ministry of Defence assisted the production in many ways, from help with costumes and props to training actors and a flight by the last operational
Lancaster bomber over
Bristol. Seventy per cent of
Overlord is "live action" (newly shot footage), filmed in ten days. The rest is archival footage, from British training missions to the invasion and captured German film. Cooper and his cinematographer,
John Alcott, tried to create a consistent look when filming the contemporary footage. Cooper said, "After Alcott examined [the pristine nitrate negatives], we decided to film Overlord on period lenses. Alcott scoured England and found two sets of 1936 and 1938 German
Goerz and
Schneider lenses. Alcott then applied a lighting style in keeping with the war photography". ==Reception and legacy==