Buck Rogers, accidentally frozen and revived in the 25th century, was the first space opera comic strip hero, adapted from Philip Francis Nowlan's book "Armageddon 2419 A. D." (and changed quite radically in the process). His most successful imitation was Flash Gordon, who saves contemporary Earth from being destroyed by a bizarre alien attack.
As the hero of a Saturday morning cliffhanger movie serial, however, things are reversed and Buck Rogers (1939) is an inferior imitation of Flash Gordon (1936, 1938, 1940). This serial has the same main actor (Buster Crabbe) as the Flash Gordon serials, but that does not completely rescue it from a repetitive plot and mostly unenergetic acting. It seems possible that the problem was caused in part by the attempt to target a younger audience. It is no wonder that no sequel was ever produced.
Buck Rogers fights on the side of American freedom fighters. In the original book they were fighting against Chinese occupations, but for the comic and the serial this was changed to a home-grown corrupt regime. Great care is taken to present the situation as the fight of the (underground) legitimate government against a criminal usurper rather than the fight of revolutionaries against an unpopular government. For modern tastes this semantic trickery is perhaps a bit too obvious, but something else has aged even worse: the Zuggs, a naive and easily manipulable race naturally subordinate to the human master race of Saturn. Which itself appears quite unable to get anything done without help from humans from Earth.
Compared to all other serials of this nature, this one is about average. It is only in comparison to the Flash Gordon serials, which are simply more fun, that it is really weak. My rating of 6 is a compromise between an intrinsic rating of 5 or 6 ('meh' or 'not bad') and a rating of 7 ('good') for the serial's historic significance.
I found the 1979 film, which again reworked the story completely, far more enjoyable.
