Captain Talmadge was the commanding officer of the ship Dorian in the 24th century.

He was transporting the Federation Ambassador Ves Alkar and his "mother" Sev Maylor to mediate peace talks on the planet Rekag-Seronia when his ship was attacked by two battle cruisers from the planet and he sent a distress call.

The USS Enterprise-D received the call and came to the ship's aid. Talmadge asked Captain Picard to beam the two Lumerians aboard to make sure they're safe, and the Enterprise-D continued the mission. (TNG episode: "Man of the People")