Tarzan Thriumph, Johnny Weissmuller (1943)

The movie you are asking about is likely Tarzan Triumphs, a 1943 adventure film starring Johnny Weissmuller, not a 1982 film. This was the first Tarzan film produced by Sol Lesser for RKO Pictures and is notable for its World War II-era propaganda theme.
Plot Summary
The film is set during World War II, with Jane having returned to England to visit her sick mother, which serves as the explanation for her absence. A force of German paratroopers invades the hidden city of Palandrya, an isolated civilization rich in mineral wealth, and enslaves its people (Wikipedia)