Sam Fuller's first and greatest war film (1951), which launches a Fuller retrospective at Block Films, is even better in its terse and minimalist power than the restored version of The Big Red One released last year. The first Hollywood movie about the Korean war, this introduced Gene Evans, the gruff star Fuller was to use many more times, as a crude, bitter, savvy sergeant who, despite his obvious racism, bonds with a South Korean war orphan. In addition to being visually and aurally brilliant, the film includes virtually unprecedented debates about America's racial segregation and the internment of Japanese during World War II. An independent production, The Steel Helmet did so well that it immediately won Fuller a contract at 20th Century Fox. With Steve Brodie, Robert Hutton, and James Edwards. 84 min. Fri 4/1, 8 PM, Northwestern Univ. Block Museum of Art.