Security on the March (1943) is an instructional film that teaches viewers the safest way to evade detection while traveling in tanks. And: World War II Veteran Lloyd Heller Shares Details About Production of 1943 Tank Training Film "In August, an e-mail came to motion picture archivist Carol Swain’s inbox asking about a World War II training film called Security on the March. Richard Herde contacted the Motion Picture unit looking for information about a film his 100-year-old uncle, Corporal Lloyd Heller, had helped make while serving as a tanker in the United States Army. As luck would have it, Heller remembered the exact title of the film, which made it much easier to find, and a beautiful 35mm negative was preserved here at the National Archives. The motion picture preservation lab scanned Security on the March and made a DVD so that Heller could view the film for the first time in over 70 years."