Patrol

Common military ranks in English
Navies	Armies	Air forces
Commissioned officers
Admiral of the fleet	Marshal or Field marshal	Marshal of the air force
Admiral	General	Air chief marshal
Vice admiral	Lieutenant general	Air marshal
Rear admiral	Major general	Air vice-marshal
Commodore	Brigadier or Brigadier general	Air commodore
Captain	Colonel	Group captain
Commander	Lieutenant colonel	Wing commander
Lieutenant commander	Major or Commandant	Squadron leader
Lieutenant	Captain	Flight lieutenant
Sub-lieutenant	Lieutenant or First lieutenant	Flying officer
Ensign	Second lieutenant	Pilot officer
Midshipman	Officer cadet	Officer cadet
Enlisted grades
Warrant officer or Chief petty officer	Warrant officer or Sergeant major	Warrant officer
Petty officer	Sergeant	Sergeant
Leading seaman	Corporal	Corporal
Seaman	Private	Aircraftman

Military organization
Typical Units	Typical numbers	Typical Commander
fireteam	3-4	corporal
squad/section	8-12	sergeant
platoon	15–30	lieutenant
company	80–150	captain/ major
battalion	300–800	lieutenant colonel
regiment/brigade	2,000–4,000	colonel/ brigadier general
division	10,000–15,000	major general
corps	20,000–40,000	lieutenant general
field army	80,000+	general
army group	o2+ field armies	field marshal
region/theater	4+ army groups	Six-star rank

For other uses, see Patrol (disambiguation).

A patrol is commonly a group of personnel, such as law enforcement officers or military personnel, that are assigned to monitor a specific geographic area.

This is also often referred to as a beat.

Military

UN Peacekeepers in Eritrea.

See also: Patrolling

In military tactics, a patrol is a sub-subunit or small tactical formation, sent out from a military organization by land, sea or air for the purpose of combat, reconnaissance, or a combination of both. The basic task of a patrol is to follow a known route at which sent to investigate some feature of interest, or to fighting patrols (US combat patrol), sent to find and engage the enemy. A patrol can also mean a small cavalry or armoured unit, subordinate to a troop or platoon. A patrol usually comprises a section or squad of mounted troopers, or two AFVs (often tanks).

Law enforcement

A patrol performed by United States Secret Service officers.

Indonesian National Police personnel during patrol

U.S. Border Patrol agent monitoring the U.S.-Canada border in Montana

In non-military law enforcement, patrol officers are law enforcement officers assigned to monitor specified geographic areas—that is, to move through their areas at regular intervals looking out for any signs of problems of any kind. They are the officers most commonly encountered by the public, as their duties include responding to calls for service, making arrests, resolving disputes, taking crime reports, and conducting traffic enforcement, and other crime prevention measures. A patrol officer is often the first to arrive on the scene of any incident; what such an officer does or fails to do at the scene can greatly influence the outcome of any subsequent investigation. The patrol officer, as the person who is in the field daily, is often closest to potential crime and may have developed contacts who can provide information.

The Philadelphia Foot Patrol Experiment, a randomized control trial conducted by Temple University, has shown that foot patrols reduce crime. With the resources to patrol 60 locations, researchers identified the highest violent crime corners in the city, using data from 2006 to 2008. Police commanders designed 120 foot patrol areas around these corners, and stratified randomization was used to assign pairs of foot patrols with similar crime rates as either a comparison or a target area. Officers generally patrolled in pairs with two pairs assigned to each foot patrol. After three months, relative to the comparison areas, violent crime decreased 23%.

Official records of police activities during the intervention period reveal the following in the target areas:

• Drug‐related incident detections increased 15%
• Pedestrian stops increased 64%
• Vehicle stops increased 7%
• Arrests increased 13%

An emerging trend within patrol is the supplement of basic police patrol with that of private security agencies. The privatization of police is explored in James Pastor's book The Privatization of Police in America: An Analysis and Case Study.

Etymology

From French patrouiller from Old French patouiller (“to paddle, paw about, patrol”) from patte (“a paw”).

Non-law enforcement patrols

Schools

Some elementary schools use the term patrol to refer to students who are selected to monitor safety in the classroom or to those students who assist crossing guards with safety of children crossing busy streets. Another common term for this use of patrol is hall monitor.

Scouting

In Scouting, a patrol is six to eight Scouts (youth members) under the leadership of one of their number who is appointed Patrol Leader and supported by a Second or Assistant Patrol Leader. This is the basic unit of a Scout troop. The Patrol method is an essential characteristic of Scouting by which it differs from all other organizations, using the natural dynamics of the gang for an educational purpose.