After six films starring alongside Johnny Weissmuller as jungle beauty Jane, Maureen O'Sullivan decided to depart the series, leaving the writers of the next Tarzan film not only looking for a way of explaining the lovely actress's sudden absence but also having to ensure that male cinema-goers still had a reason to take their family to see the ape-man's latest adventure.

Their solution: have their script conveniently see Jane visiting friends in London, and introduce a sexy new character in the form of Zandra (Frances Gifford), princess of the hidden city of Palandria, who seeks help from Tarzan after Nazi soldiers enslave her people.

A far cry from the first two pre-Hays code Tarzan films, which were chock full of enjoyably un-PC violence and raunchiness, Tarzan Triumphs is strictly family friendly matinée material, with the added novelty of some delightfully daft WWII propaganda. Director Wilhelm Thiele packs the first half of his film with the usual vine swinging, frolicking in lagoons, stock footage of animals, and scenes of good old Cheetah providing plenty of hilarity, but he eventually delivers some decent action once the bad guys go out of their way to upset Tarzan: when the Nazis kidnap Boy and slap him about a bit, our jungle hero finally announces "Now Tarzan make war!" and it's non-stop Nazi bashing fun thereon in, with even Cheetah and Boy grabbing firearms to get in on the action!

And talking of Cheetah, the cheeky chimp also provides the film's excellent final joke, which sees stupid Nazi radio operators in Berlin mistaking the furry-faced funster for 'Der Fuhrer'. Take that, you silly Nazi nincompoops!

6.5 out of 10, rounded up to 7 for IMDb.