Commander

Commander was a commissioned officer rank used by the service organizations of many civilizations. 
As a traditional naval grade in Human usage, commander was the second most senior line officer rank, falling between a lieutenant commander and a captain. In Romulan usage, it falls between sub-commander and admiral.
During the 20th century on Earth, the United States Navy used this rank. The United States Navy used the insignia of three solid sleeve stripes to denote the rank of commander. The watch station of command duty officer was a position that could be held by a commander. ()
== Responsibilities ==
=== Starfleet ===
The rank of commander was a senior rank, common among executive officers and senior department heads, or even commanders of space stations and other such installations. (; ; DS9 Season 1-DS9 Season 3) 
While the rank was not required to be Chief Medical Officer, the Bridge Officer's Test was required to hold the rank. ()
=== Other organizations ===
In the Xindi-Reptilian military of the 22nd century, some commanders controlled a squadron and a regiment. ()
The rank of commander in the Romulan Star Empire was considered the equivalent of a Starfleet captain. () Also, a sub-commander grade existed in the Romulan military, with this rank also used in the 22nd century by the Vulcan High Command. (; )
The 23rd century Imperial Klingon Fleet used the rank of commander to denote the commanders of smaller space vessels, such as a Bird-of-Prey. () A Klingon rank of captain was used for larger vessels with this title carrying over to the 24th century Klingon Defense Force. (; )
== Noted commanders ==
;Andorian Imperial Guard:
*Thy'lek Shran
;Benthan Guard:
*Avik
;Dramian:
* Demos
;Federation Starfleet:
;First Federation:
* Balok
;Kelvan Empire:
* Rojan
;Klingon Defense Force:
*Kang
*Kaybok
*Kiff
*K'Nera
*Kolana
*Kor
*Kruge
*Kuri
*Kurn
*Morag
*Sorval
;Nakan military:
*Saavdra
;Romulan Star Empire
*Donatra
*Konsab
*Rekar
*Sela
*Sirol
*Suran
*Tebok
*Tomalak
*Toreth
;Suliban Cabal
*Raan
;Talaxian
*Paxim
;Tholian Assembly
*Loskene
;Xindi
*Dolim
*Kolo
;Zalkonian
*Sunad
== Appendices ==
=== See also ===
* Field commander
* Honorary commander
* Space Commander
=== External link ===
* 
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cs:Komandér
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Category:Military ranks
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