You would have to know what police department that police officer works for. Most agencies have the same type of numbering system. Assuming you know that information, just call that agency's non emergency phone number and talk to the dispatchers. Badge numbers are public record and they have to let you know who it belongs to, at least their last name. If your purpose was to file a complaint, or commend an officer, you can always do so by using the badge number instead of the name. They will figure it out and the process will continue as it should.
Sagar is the name of the police officer
A trainee police officer can also be referred to as a police cadet or a police recruit.
it was officer dibble
You would call him/her the chief of police.
You would normally name the police officer (driver) and his employer, e.g. the city or police department where he works.
Officer Beaples
In most states the police officer that tends to the court room is a deputy sheriff. They are called bailiffs.
"Eugene Tackleberry"
It is possible that a police officer may give his name as P.C. if they are his initals. His full name should also be provided to the person for reference, however.
Police is a common noun. Proper nouns name a specific police officer or a specific police department. Examples: Officer Glen Martin The Glendale Police Department
Underclassman
He is a police officer, Jack.