Royal Army College

Lesson Overview

On a home operation a person may pass briefly into the Army's hands: someone who must be stopped to prevent harm, or held under a specific lawful authority until the police can take charge. It is one of the most legally exposed things a soldier ever does at home, and one of the easiest to get wrong under pressure. This lesson sets out how it is done lawfully. It covers the home-soil position, the narrow circumstances in which a soldier may detain, the handling sequence, the protections owed to everyone held, lawful search of persons and property, the careful handling of evidence, the absolute ban on abuse, and the Detainee Log and signed chain of custody that prove the work was done properly. It is the same discipline the Law of Armed Conflict course teaches in Lesson 06 for a captured person, applied here to the home setting.

This is the knowledge layer. Searching a struggling person safely, applying a restraint without crossing into punishment, judging when a wound needs first aid first, steadying a frightened person while a hostile crowd presses in, and keeping an honest log under pressure are skills built in supervised practice and certified in person, not learned from a page. Learn here what the law requires and why, and the shape of every drill, so that when you train it under supervision and one day carry it out for real, you already understand each step and the reason it is there.

By the end you will be able to state the home-soil position on detention, name the three lawful bases on which a soldier may hold a person and the four questions that test any detention, carry out the handling sequence in order, list the protections owed to every person held, conduct a lawful and dignified search, handle found evidence so it is not lost or tainted, and use the Detainee Log and chain of custody to make a clean handover to the police.

Key Terms

Detention: the lawful holding of a person against their will, for a defined lawful purpose, for no longer than that purpose requires.
Arrest: the formal exercise of police power to take a person into custody for the criminal process. On home soil this is a police act, not a soldier's: the police arrest and charge; the soldier, at most, holds briefly and hands over.
Police primacy: on home soil the civil police hold lead authority for keeping the peace and enforcing the law; the Army supports them and hands a detained person over at the earliest safe opportunity.
The lawful-basis test: the four questions answered before holding anyone: who authorises it, on what grounds, for how long, and to whom the person goes next. If any one cannot be answered, do not detain; seek direction.
Any-person power of arrest: the power the law gives to any person, not to soldiers especially, to hold someone caught committing a serious offence where the police are not yet present, on the firm condition of immediate handover.
The handling sequence: the Army's drill for handling a person held: Search, Secure, Silence, Segregate, Safeguard, then Document and hand over.
Search: the inspection of a person, vehicle, or place for weapons, hazards, or evidence, conducted only under lawful authority and confined to its lawful purpose.
The protections owed to all: humane treatment, dignity, food, water, shelter, medical care, and protection from violence, cruelty, humiliation, and the curiosity of others, given to every person held by need and never by who they are.
Evidence: any item or trace that may matter to the criminal process. Once found it is left as it lies where possible, recorded, secured, and accounted for, so it is neither lost nor tainted before the police take charge.
Detainee Log: the record opened for every person detained, which travels with them through every handover and proves they were treated lawfully and well. One person, one log.
Chain of custody: the unbroken, signed record of who held the person and when. Responsibility passes only through a recorded handover.

The home-soil position: the police hold primacy

On home soil the civil police hold primacy. They are the lawful authority for keeping the peace, enforcing the law, and taking persons into custody, and the Army runs no system of detention alongside them. When a person must be held during a home operation, the Army holds them only on a lawful basis, for the shortest time, and hands them to the civil authority at the earliest safe opportunity. The aim is not military custody but a prompt, lawful, recorded handover.

This follows directly from the citizen-in-uniform principle of Lesson 01, and it matches the position the Law of Armed Conflict course sets out for home soil. The soldier on a home operation has no special power of arrest and runs no holding cell. Where a soldier does hold a person for a few minutes on their own authority, the posture is the same: hold safely, treat well, record honestly, and pass the person to those who hold primacy as soon as it is safe.

Be exact about three words that are easily confused, because confusing them is itself a common cause of unlawful conduct. A search is the inspection of a person, vehicle, or place. Detention is the holding of a person; it may include a search but does not require one, and lasts only while its lawful reason lasts. Arrest is the police act of taking a person into the criminal process, and at home it is not a soldier's to make. The soldier's part is to hold the body briefly and safely and hand it on; the arresting, charging, and questioning belong to the police.

When a soldier may detain at all

A soldier helping the civil power has no general power to detain fellow nationals at will. The circumstances are narrow, and a soldier should know them before the moment arises. There are three.

The first is to prevent harm: to defend yourself or others against an immediate threat to life or of serious injury, where holding the person is necessary to stop that threat. This is the inherent right of self-defence the Rules for the Use of Force preserve, and it reaches no further than the threat does. The second is the any-person power: the law's grant to anyone, not to soldiers especially, to hold someone caught committing a serious offence where the police are not yet present, on the firm condition of immediate handover. The third is a specific statutory authority exercised under formal aid-to-the-civil-power arrangements, on a recorded request from the responsible civil authority, in which case the soldier acts within the terms of that authority and under civil direction. In each case the soldier acts as a citizen in uniform, uses no more force than necessary, holds for the shortest time, and hands over at the earliest safe opportunity.

Before you lay a hand on anyone, run the lawful-basis test. Who authorises this? A named, lawful basis: your right of self-defence, the any-person power, or a recorded aid-to-the-civil-power authority, not merely your sense that something is wrong. On what grounds? A defined reason that fits the basis: an immediate threat to life, a serious offence committed in front of you, a lawful instruction from the civil authority. For how long? The shortest time the reason lasts, with the handover as its clear end. To whom does this person go next? At home, almost always the police, identified and called without delay. Answer all four and the detention is one you can stand behind. If you cannot answer even one, you should not be detaining; seek direction first.

The handling sequence

The Army sets a trained sequence, practised until it is instinct, that protects both the person and the soldier. It is the same sequence the Detainee Handling standard lays down and the Law of Armed Conflict course teaches in Lesson 06: Search, Secure, Silence, Segregate, Safeguard, then Document and hand over, in that order. The order runs from making the scene safe, through bringing the person under control, to caring for them, and ends with the records and handover that make it accountable.

Search. Search the person safely for weapons and hazards the moment they are in your hands, preserving their dignity. A person you have just stopped may carry a knife or other weapon for use against you, your colleague, or themselves. Search by a member of the same sex wherever possible. Work calmly and methodically, tell the person what you are doing, and remove anything you take in their view so it can be accounted for.
Secure. Restrain only as far as is necessary and safe, using the trained, proportionate means issued to you. Match the restraint to the actual risk: a frightened, compliant person needs far less than one who is fighting. Restraint is for control, never punishment.
Silence. Prevent communication that would endanger the escort or task, such as signalling to others nearby, without cruelty. On a home operation this is the lightest touch the situation allows: stop dangerous communication, but do not deny a frightened person the few words of reassurance that steady a scene. You silence the danger, not the person.
Segregate. Keep persons held apart so they cannot coordinate, and keep the vulnerable safe. Separating a held person from a gathering crowd is as much for their protection as for control. Keep a young person, an injured person, or anyone at risk clear of others who might harm them.
Safeguard. Protect the person from harm, weather, and others, including any crowd and any member tempted to mistreat them. Give first aid as needed, treating a serious injury first as the Combat First Aid course teaches, and provide food and water as soon as the situation allows. This is the heart of the sequence: the person is now fully in your care. A person searched, secured, and then left cold, untreated, or exposed to a hostile crowd has not been handled lawfully, whatever the first steps achieved.
Document and hand over. Record the detention in the Detainee Log and hand the person, with the log, to the police by signed handover. Until that is done the person remains your responsibility and the drill is not complete.

The steps are easy to remember, but each is a real duty. The last pair, document and hand over, closes the loop and makes the handling accountable; the sooner it is safely made, the better. The figure below shows the drill as a single flow.

   BRIEF HOLDING AND HANDOVER (home soil)

   [1] LAWFUL BASIS?  ----no----> do NOT detain; seek civil direction
        |  yes (self-defence / any-person power / ACP authority)
        v
   [2] SEARCH        safely, with dignity, same sex where possible
        |
        v
   [3] SECURE        minimum restraint for control only
        |
        v
   [4] SILENCE +     stop dangerous signalling; keep apart;
       SEGREGATE     move clear of the crowd
        |
        v
   [5] SAFEGUARD     shelter; first aid by need; water; protect from all
        |
        v
   [6] DOCUMENT      open the Detainee Log at once (one person, one log)
        |
        v
   [7] CALL POLICE   identify, request, hand over at earliest safe moment
        |
        v
   [8] HANDOVER      person + log + plain account; both parties SIGN
        |
        v
       DONE          person is now in police custody; you retain your copy

   Throughout: humane treatment, minimum force, dignity. No step is a
   licence to mistreat anyone, and the drill is not finished until [8].

Figure 1. The brief-holding-and-handover drill for home soil. It begins with the lawful-basis test, runs through the handling sequence, and is not complete until the person and their log have been handed to the police by signature.

The protections owed to every person held

Every person the Army holds, however briefly and whatever they are believed to have done, is owed a set of protections, and the governing idea is the one the Law of Armed Conflict course states plainly: they are owed by need, never by who the person is. A suspected looter, an aggressive bystander, a frightened person caught up in events, each is owed the same care, because each is now a human being in your safekeeping. They are to be treated humanely and with dignity at all times. They are owed food, water, shelter, and medical care as needed, and protection from the weather and from other dangers. They are to be protected from violence, and equally from cruelty, humiliation, and the curiosity of others. That last is easy to overlook: a person you hold is not to be paraded, filmed for display, mocked, or made a spectacle for a watching crowd or a passing camera. Personal recording of a person in custody is not a souvenir; it is a humiliation and a danger, and it is not permitted.

These protections cost little. Water is given as soon as the situation allows; thirst is not a tool. A serious injury is treated first, before anything else, by the priorities the Combat First Aid course teaches; a cut hand or a knock to the head does not wait for the police. Shelter from rain or cold is found where it can be. None of this depends on the person being cooperative, innocent, or pleasant, and none is suspended because the person is abusive. The protection attaches to their being in your power, not to their character, and the moment to give it is exactly the moment it is hardest to feel like giving it.

These standards are drawn from the common standards of the law of armed conflict, applied by the Army to every person it holds on any operation, and set out for the home setting in the Army's Detainee Handling standard. They are owed in full in the few minutes a person is in the Army's hands at home, just as in the field.

Searching persons and property

A search is the inspection of a person, vehicle, or place for weapons, hazards, or evidence, done only within the law and the authorised task. Two limits draw the line. The first is lawful authority: you search only where the law or your lawful task permits, and a search for weapons is not a licence to read private papers or rummage beyond its purpose. The second is dignity and proportion: a search is conducted calmly, with the purpose explained where it can be, no more intrusively than the purpose requires, and, for a person, by a member of the same sex wherever possible. Where no same-sex searcher is available, the search is made as little intrusive as the situation allows, through clothing, before a witness, and the reason is recorded in the log. That fall-back is the exception, never the routine. Anything taken is removed in the person's view, noted, and accounted for, so their property can be returned or handed on with them.

Know the shape of a personnel search as a drill, though the skill itself is built on your feet under supervision. One member searches and a second covers, standing a little back. The searcher tells the person calmly what is about to happen, then works a fixed pattern so nothing is missed: head and collar, then arms and hands, then body, waistline, and pockets turned out, then legs down to the boots, with a careful re-check of any spot where the person flinched or drew your attention away. Anything found is removed in sight and noted; cash is counted where it can be seen; documents are kept together and not read beyond what safety requires. A vehicle or place is searched the same way, occupants kept apart and observed, any concealed space noted rather than forced where specialist help should be called. A search within its limits protects the person, protects you, and keeps the operation lawful; one that strays beyond the law or task is itself a wrong, whatever it turns up.

Handling evidence

A search or a hold will sometimes turn up an item that matters to the criminal process: a weapon, stolen goods, a suspect package. How you handle it decides whether it can be used at all, because evidence is easily lost and easily tainted. The soldier's task is narrow: preserve, do not investigate. You are not gathering a case; you are keeping safe what the police will need.

The habits are simple. Where it is safe, leave an item as it lies and tell the police what is there rather than gathering it up, because where a thing was found can matter as much as the thing. Touch as little as possible and only what safety requires; a weapon that must be made safe is handled as little as can be managed, and how and why is recorded. Anything you take, take in the person's view, keep separate, and note: what it is, where it was, when, and who has held it since. Do not add to it, alter it, or mix one person's property with another's. It then passes to the police as part of the handover, recorded in the log, with an unbroken account of where it has been from the moment it was found.

No abuse, and the duty to stop and report it

Some things are forbidden absolutely. The mistreatment of a person in the Army's hands is prohibited at all times. No provocation, insult, frustration, or order can make it lawful to strike, degrade, or be cruel to a person you hold. Force on a held person is for control alone, never to punish or to answer abuse, and it is always the minimum the situation requires. This is the discipline the Rules for the Use of Force demand. Name the excuses in advance, because they are predictable and refusing them is part of being ready: it is not lifted by an order, which would be manifestly unlawful and which no one may give or is bound to obey; not by anger, however real; not by the gravity of what the person is suspected of doing; and not by the person's own abuse of you, which is the very moment the temptation is strongest and the discipline matters most.

Tied to that ban is a duty on every member. If you see a person in custody being mistreated, by a member of the public, a fellow soldier, or anyone else, you must stop it where you safely can and report it at once, through the chain of command and, if the chain is itself implicated, around it. A word, a step between, a call to a senior who is present can interrupt a developing incident. Staying silent is not neutral; it lets a wrong stand and become a pattern, and is itself a failure of duty. Real loyalty protects the Army's good name by keeping its standard, not by covering a breach of it.

The Detainee Log and chain of custody

Lawful handling must be provable, and the means is the Detainee Log. A log is opened for every person detained and travels with them through every handover: one person, one log. It is the written half of the duty of care, and the proof, long after memory has faded, that the person was treated lawfully and well. It protects the person, by recording that they were searched with dignity, fed, sheltered, treated, and not abused. It protects you, by setting down what happened, what force was used and why, and the person's condition when they came to you and when you passed them on, so a later complaint meets a clean contemporaneous record. It records, only as far as necessary, who the person is so far as known, when and where and why they were detained, the lawful basis, any force used and why, their condition and care given, any property or evidence taken, the food, water, and care provided and when, and every movement and handover. The full template is in the Army's Detainee Handling standard; know its shape before you need it.

   ROYAL KAHARAGIAN ARMY: DETAINEE LOG          (one person, one log)
   ------------------------------------------------------------------
   Reference number ........ : __________________________________
   Date / time / place ...... : __________________________________
   Detaining unit & member .. : ______________________ (name, no.)
   Lawful basis / reason .... : __________________________________
   Person (description; name : __________________________________
     if known; apparent age/sex)
   Circumstances (factual) .. : __________________________________
   Any force used (what/why/ : __________________________________
     by whom)
   Condition / injuries;       : __________________________________
     medical care given
   Property / evidence taken : __________________________________
     (itemised; receipted)
   Food, water, care (+ times) : __________________________________
   ------------------------------------------------------------------
   MOVEMENTS AND HANDOVERS (the chain of custody)
     Time | From (sign) | To (sign) | Condition noted
     -----+-------------+-----------+----------------------------
          |             |           |
          |             |           |
   ------------------------------------------------------------------
   Release / transfer (time, to whom, authority) : ________________
   Remarks ......................................: ________________

   Record only what is factual and necessary. Protect privacy. Keep
   it accurate and complete: it is the proof the person was treated
   lawfully and well, and it protects you as much as the person held.

Figure 2. The layout of the Detainee Log. The upper block records the person and what was done for them; the movements-and-handovers block is the written chain of custody, a signed line for every change of hands. Fill it honestly, as you go.

Tied to the log is the chain of custody. Responsibility for a person passes only through a recorded handover, signed by both the member handing over and the person or authority receiving. The movements-and-handovers block is where it is written: the time, who handed over, who received, the condition of the person, and both signatures. You do not simply leave a person with someone or assume another member "has them now"; you hand over by name and signature, so at every moment it is clear who is answerable for that person's safety. At home the handover is to the police, made as soon as it is safe, with a plain account of the circumstances, the grounds, any force used, and the person's condition, and with property and evidence presented in recorded order. A break in that chain, a person passed on without a signature, an hour unaccounted for, is exactly the gap in which abuse hides and the gap the system exists to prevent.

In Practice: A Brief Hold at the Flood Line

During severe flooding, a section is helping the police hold a cordon around an evacuated street. A soldier catches a man climbing from the window of an empty home with goods in his arms. The man is agitated and tries to pull away. The first minutes decide whether this is done lawfully.

The soldier runs the lawful-basis test: a serious offence is being committed in plain sight, the police are not yet at this spot, and the man goes to them as soon as they arrive. That is the any-person power, and it answers all four questions, so the hold is lawful. The soldier and a colleague take hold with only the force needed to control him, search him safely with his dignity kept, and secure him with the trained restraint they carry, no more. They tell him what is happening and keep him from calling to others nearby, which is all the silence the moment needs, then move him apart from a small, angry crowd, segregating him as much for his own protection as for control. Then the heart of it: they safeguard him, sheltering him from the rain, checking him for injury and dressing a grazed hand on the spot, and giving him water. They open a Detainee Log at once, noting the time, place, reason, lawful basis, the minor force used, his condition and the graze and dressing, and the water given. The goods are set aside, noted, and left where the police can see them.

Then they call the police. When an officer arrives they hand the man over by signature with his log, give a plain account, present the recovered goods in recorded order, and note the handover as the final line in the chain of custody. At no point is he struck, mocked, filmed by onlookers, threatened, or questioned beyond confirming who he is; the questioning, arrest, and charge are for the police. The whole thing is unremarkable, and that is the point: a disciplined sequence, humanely carried out and properly recorded, handed promptly to the authority that holds primacy. The man is no worse for having met these soldiers than his own conduct made unavoidable, and that is exactly the measure the law sets.

Check Your Understanding

What is the home-soil position on detention? In a sentence each, state who holds primacy, on what basis the Army may hold a person, and the aim of any detention. Then name the four questions of the lawful-basis test and say why you must answer all four before holding anyone.
Name the steps of the handling sequence in order, and say in a sentence what each is for. Where is the detention recorded, what rule governs how that record travels, and what makes a handover complete?
A person you are lawfully holding insults and provokes you. What does the ban on abuse require of you, and which predictable excuses does it refuse? What must you do if you see a comrade begin to mistreat the person?

Reflection (write a short paragraph): At home the aim of any detention is a prompt, lawful, recorded handover to the police, not military custody. Imagine you are holding an aggressive, abusive person for the few minutes before the police arrive, before a watching crowd with cameras out. What would you settle in your mind beforehand so that you keep the handling sequence and the protections owed, give the water and any first aid, keep the person from the curiosity of the crowd, and treat them with dignity, however they behave? Why is that discipline the professional response and not weakness?

Summary

On home soil the civil police hold primacy; the Army detains only on a lawful basis, for the shortest time, and hands over at the earliest safe opportunity. The aim is a prompt, lawful, recorded handover, not military custody. At home the police arrest and charge; the soldier, at most, holds briefly and hands over.
A soldier may detain only in narrow circumstances: to prevent harm, under the any-person power with immediate handover, or under a specific lawful authority, acting as a citizen in uniform with no special power of arrest and using minimum force. Before holding anyone, run the lawful-basis test: who authorises it, on what grounds, for how long, and to whom the person goes next.
The handling sequence is Search, Secure, Silence, Segregate, Safeguard, then Document and hand over, the same drill the Law of Armed Conflict course teaches in Lesson 06, carried out for the home setting and closed only by a signed handover to the police.
Every person held is owed humane treatment, dignity, food, water, shelter, and medical care, and protection from violence, cruelty, humiliation, and the curiosity of others, by need and never by who they are; a serious injury is treated first as the Combat First Aid course teaches. Searches stay within the law and the task, conducted with dignity and by a same-sex member where possible; found evidence is preserved, not investigated, and kept in an unbroken account.
Abuse of a person in custody is forbidden absolutely, refusing every excuse of order, anger, gravity, or provocation, and every member has a duty to stop it and report it. Every detention is recorded in the Detainee Log (one person, one log), and responsibility passes only by a signed handover, the chain of custody, which at home ends with the police.

Detention, Search, and Handling