Trooper (police rank)
Trooper is a rank used by several civilian police forces in the United States. In its plural form, troopers, it generally refers to members of a state police, state highway patrol, or state department of public safety, even though those officers may not necessarily be of the rank of trooper.
For example, in the Louisiana State Police,[1] Trooper is a rank below Trooper First Class, and above Cadet. The insignia for this rank consists of a gold colored 'TPR' collar pin worn on the wearer's right lapel. Cadets who complete the state police academy are automatically promoted to Trooper. The title of address is "Trooper".
Early Australian police forces had officers termed troopers, typically mounted police. For example, the classic Australian folk song Waltzing Matilda contains the line "Down came the troopers, one, two, three," referring to three mounted police who had come to arrest the swagman. The term is no longer in common usage in Australia.
(Edit 4/3/16) 'Trooper's' Is a general term the Australian media uses as slang to describe soldier's oversea, although it is typically shortened to 'Troops'.
'Trooper' is also an Australian colloquialism used to describe someone who is battling through a trough a tough time. E.g. "Dazza just lost his job, but he's dealing with it like a real trooper".
Usage in other agencies or countries may vary.
Wildlife Trooper
Is a rank commonly used in the western United States associated with the duties of a Game Warden. Currently this title is used in the states of Oregon[2] and Alaska.[3]