William Forrest Jr. on AllMovie

Baby boomers will recall silver-maned actor William Forrest as Major Swanson, the brusque but fair-minded commander of Fort Apache in the 1950s TV series The Adventures of Rin Tin Tin. This character was but one of many military officers portrayed by the prolific Forrest since the late 1930s. Most of his film appearances were fleeting, and few were billed, but Forrest managed to pack more authority into 30 seconds' film time than many bigger stars were able to manage in an hour and a half. Outside of Rin Tin Tin, William Forrest is probably most familiar as the sinister fifth-columnist Martin Crane in the 1943 Republic serial The Masked Marvel.