Tony Curtis stars as a US Marine on a treacherous mission to locate a Frenchman on Bougainville who may have important information which will save the lives of hundreds of American troops. He's accompanied on the mission by Sergeant Frank Lovejoy, who failed in his last mission on Guadalcanal, and GIs Skip Homeier and Alan Wells. The film's title implies an invasion sequence, but Beachhead is more of a cat and mouse chase film, with our heroes--also burdened by the presence of attractive love interest Mary Murphy--being pursued by a squad of Japanese troops. Curtis looks hot and hunky and never has a hair out of place. It's not the most realistic or exciting war film you've ever seen, but the Kauai location footage adds flavour and Lovejoy is fairly good.
