en.wikipedia.org/wiki/Centurion

A centurion was a professional officer of the Roman army after the Marian reforms of 107 BC. Most centurions commanded groups of centuries of around 100 ...

en.wikipedia.org/wiki/List_of_Roman_army_unit_types

This is a list of Roman army unit types. Actarius – A military or camp clerk. Adiutor – A camp or ... or other medical reasons. Centurion – Officer rank, generally one per 80 soldiers, in charge of a centuria. Clinicus – A medic. Cornicen – Bugler.

en.wikipedia.org/wiki/List_of_Chicago_P.D._characters

This is a list of fictional characters in the television series Chicago P.D.. The article deals with ..... Officer Sean Roman made his first appearance during the first episode of the second season "Call It Macaroni", which was broadcast on ...

chicago-pd.wikia.com/wiki/Sean_Roman

Officer Sean Roman is a former patrol officer for the CPD. He was the new partner of Kim Burgess. Roman and Burgess first meet and tension is high from the start.

www.hollywoodreporter.com/live-feed/chicago-pd-finale-roman-exit-897413

May 25, 2016 ... 'Chicago P.D.' Star on Burgess' "Test of Faith," Roman Romance ... backdoor Justice spinoff when we knew it was going to be an officer shot.

www.warhistoryonline.com/ancient-history/12-ranks-roman-military-officers.html

Feb 9, 2016 ... The Roman Empire saw one of the first truly professional armies in history, and became the inspiration for European armies that followed it.

deadline.com/2016/05/chicago-pd-surprise-brian-geraghty-exiting-nbc-show-1201762964

May 25, 2016 ... ... the producers and cast of NBC's Chicago P.D. managed to keep the final fate of officer Sean Roman a secret right up until tonight's season 3 ...

www.britannica.com/topic/centurion-Roman-military-officer

Centurion: Centurion,, the principal professional officer in the armies of ancient ... the commander of a centuria, which was the smallest unit of a Roman legion.

tvline.com/2016/05/25/chicago-pd-brian-geraghty-leaving-season-4-sean-roman

May 25, 2016 ... "Chicago P.D." star Brian Geraghty, who plays Sean Roman, will not return ... The officer recently chose to start anew in sunny San Diego — but ...