Gotham City Police Department
37 years ago - 21-year-old Harvey Bullock joins the GCPD when it becomes clear he won't be making it as a boxer.
34 years ago - 24-year-old Harvey Bullock is promoted to Detective in the GCPD, but is warned by his fellow officers that he needs to start playing ball within the corrupt system.
32 years ago - 26-year-old Harvey Bullock, disolutioned by the corruption of the GCPD, gives up and starts accepting bribes. He is soon promoted to Sergant.
31 years ago - 22-year-old James Gordon is the first GCPD officer on the scene of the murder of Thomas & Martha Wayne and gives his coat to young Bruce Wayne, taking care of him.
30 years ago - 23-year-old James Gordon marries Barbara Kean & moves to Chicago.
26 years ago - 32-year-old Harvey Bullock is promoted to Lieutenant in the GCPD by Commissioner Loeb, who starts to blackmail him and using him as an enforcer. 29-year-old Slam Bradley is promoted to sergeant in the Chicago PD but is forced to leave the city when a hit is put on him, and transfers to the GCPD
23 years ago - 32-year-old Slam Bradley refuses to accept a bribe, knocking out Lieutenant 35-year-old Harvey Bullock & leaving the GCPD. He becomes a private investigator in Gotham's East End.
20 years ago - 33-year-old James Gordon divorces Barbara Kean & returns to Gotham. 38-year-old Harvey Bullock is assigned as his new partner by Commissioner Loeb, tasked with disrupting his efforts to clean up the GCPD.
18 years ago - 35-year-old James Gordon & 40-year-old Harvey Bullock destroy Commissioner Loeb's blackmail evidence. loosening his hold over the GCPD. Bullock becomes Gordon's most trusted ally.
15 years ago - 38-year-old James Gordon is the only man in the GCPD that Batman trusts when he first surfaces. Gordon mistrusts him at first, but soon they are working together along with Assistant DA Harvey Dent. 43-year-old Harvey Bullock belives that he is a dangerous vigilante who needs to be stopped. When he discovers that Gordon has been working with Batman secretly, his trust is violated. Ultimately, while he does not trust Batman, he does trust Gordon, and begins to begrudgingly work with Batman despite constantly threatening to bring him in.
13 years ago - 40-year-old James Gordon becomes the new Commissioner of the GCPD. He starts the new Major Crimes Division, with 45-year-old Harvey Bullock & Sarah Essen.
11 years ago - 42-year-old James Gordon & the GCPD are put under new pressure to capture Batman by mayor Rupert Thorne when Hugo Strange frames him for the kidnapping of Thorne's daughter. This leads to the apparent shooting death of Strange who is wearing a replica Batsuit. 23-year-old Renee Montoya becomes a uniformed police officer at the GCPD. She is instrumental in solving several major crime scenes, including finding Mayor Rupert Thorne's kidnapped daughter.
9 years ago - 25-year-old Renee Montoya is promoted to detective, and is singled out by Crispus Allen as his new partner in the GCPD Major Crimes Division.
8 years ago - Sarah Essen steps down from the GCPD Major Crimes Division. 50-year-old Harvey Bullock chooses to work alone.
6 years ago - 28-year-old Renee Montoya's partner Crispus Allen is killed by corrupt crime scene tech Jim Corrigan in mid investigation. She works with 52-year-old Harvey Bullock to catch her partner's killer, getting both their hands dirty but getting their man. They become partners in the GCPD Major Crimes Division.
3 years ago - 50-year-old James Gordon coordinates the GCPD during the No Man's Land earthquake. He receives a "batphone" from Batman. 31-year-old Renee Montoya's partner Harvey Bullock is injured.