Deep Space 9
episode 7.7, first aired November 11, 1998
Kor asks Worf to get him a command on a ship. Worf agrees and tells Martok. Martok hates Kor for refusing him admission to officers school (or something) long ago and refuses. Worf gives Kor a position as 6th officer anyway.
They attack a Dominion outpost. Kor takes over when the others are hurt and almost gets them killed. Then Kor saves the day and he's forgiven by Martok.
Deep Space Nine Episodes - Season 7
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