Sydney Police Department

"A lot of brave police officers fought and died alongside UNSC troops during the Battle of Sydney. They weren't soldiers, and they knew the odds were heavily against them, but they still did their best to defend their city from the Covenant."

- First Lieutenant William Wright, in regards to the performance of officers of the Sydney Police Department against the Covenant during the Battle of Sydney.

The  was a law enforcing branch, in charge of enforcing law on the metropolitan Sydney area.

Foundation
The Sydney Police Department was founded in May 2164, when the population of the city reached 24 million inhabitants. The former law enforcing body, the New South Wales Police Force was simply incapable of supporting such a large city, and as a result, crime was quickly a major problem within the Sydney area. General of Police Winston Boyd, the overall commander of Australia's Police Forces, decided to form a new Police Force that focused on enforcing law and order in the city of Sydney and the surrounding area, to be named (aptly) the Sydney Police Force.