Mobile Suit Gundam Episode 24: Black Tri-Star
Episode 24 of 43 of Mobile Suit Gundam, aired September 15, 1979, 25 minutes. Available with English subtitles and dub where released.
Episode summary
A mole inside the Federation tips off Zeon HQ, who then send the Black Tri-Stars special team ordered to destroy the White Base and her prototype mobile suits.