Cameron served in Europe during World War II in the U.S. Army's 2nd Armored Division ("Hell On Wheels").
The WWII adventure novel, Morituri by German author W. J. Lueddecke, a bestseller in Europe, had not been published in English before work began on the film.
Cameron's credit is thus "code" for his actual assignment — which was to create a new, hybrid novel drawn from both the translation of the original and the Taradash screenplay, both of which materials would have been provided by the movie studio.
Though that perspective is naturally derived from the main character's voice-over commentary in the episodes, Cameron often employed first person narrative in his original novels, particularly the earlier (1960–1970) standalone works, such as "The Empty Quarter", "Angel's Flight", "The Good Guy" and "The Amphorae Pirates".
Cameron also created the character Longarm — whose adventures, starting in the late 1970s, pretty much defined the then-new sex-and-sagebrush subgenre of the "adult" Western — under the house name "Tabor Evans" and wrote at least 52 of the more-than-400 books in the series.