(Mirror Universe)(Bajoran isolationist group)(ancient peoples that stole the Sword of Kahless from
Qo'noS)(ancient and advanced civilization)(Delta Quadrant race)(renegade ex-Federation colonists)(Cardassian Intelligence)(during the 2260's)(during the 2260's)(during the 2260's)(as seen in DS9 ["Rules of Engagement," et. al.])(from Star Trek II, up to 2350?)(a variation of the above)(as seen from 2350?-2370)(as of 2371)(as seen in TNG ["Future Imperfect" and "Parallels"])(as seen in TNG ["All Good Things..."] and DS9 ["The
Visitor"])(during the 29th century, as seen in Voyager ["Future's
End"])(during the 2260's)(during the 2260's)(during the 2260's)(Romulan Intelligence)(The Mirror Universe)(home planet of Dax [DS9] and other Trills)(TOS "The Gamesters of Triskelion")(Delta Quadrant race, known for organ harvesting)

The three arrowheads above are the insignia used aboard the original Enterprise. The first is the insignia worn by command officers. The second was worn by science and medical officers, and the third by engineering, security, etc. During that era, each ship had its own distinct insignia. The insignia used aboard the original Enterprise was adopted as the symbol of Starfleet, sometime between "Turnabout Intruder," and The Motion Picture.