There's quite an informative article about Huston's war trilogy by Gary Edgerton called "Revisiting the Recordings of Wars Past" from the Journal of Popular Film and Television, v. 15, n. 1, Spring 1987. It effectively traces Huston's progression from "Report from the Aleutians" through "Battle of San Pietro" to "Let There Be Light"--a progression that seems to lead inevitably to VietNam. "San Pietro" had its own problems with the censors, since its brutality exceeds its usefulness as propaganda.