For historical shots, he relied on newsreel footage that he sepia-toned and inserting similar-toned footage of his actors.
Watch the newsreel below and observe a fabled minute in the life and times of Marty Reisman, who died on Friday at age 81.
The newsreel footage in Watchers of the Sky follows columns of refugees fleeing war, suitcases and small children in their arms.
newsreel trucks, television units, press cars twisted among the vehicles heading for the desert.
I asked him, referring to the flight he had spoken about in the newsreel.
There were newsreel shots of V-1 and V-2 being blasted from their takeoff ramps and a montage of later experimental models.
One day I entered a motion picture house to view a newsreel of the European battlefields.
One feature picture, one newsreel and one animated cartoon later, they walked past the plant again.
Reporters and newsreel cameramen swarmed over my quarters at Grosvenor House.
The horror of the struggle, filled with the dead and dying, far surpassed in ferocity any representation of the newsreel.