Royal Army College

Lesson Overview

The last lesson set out the categories of aid and the process that brings the Army to a home task. This lesson sets out the law the soldier then acts under, and the narrow powers it allows. More soldiers go wrong here than through any failure of courage: far more often a soldier with good intentions reaches for a power the uniform seems to promise but the law has never granted. This lesson settles, in advance, exactly what that power is, so the question is answered when there is no time to think.

It covers four things: the law that governs a home operation, which is domestic and human rights law and not the law of armed conflict; the limits of a soldier's powers under the citizen-in-uniform principle, with the right of self-defence and the narrow citizen's power of arrest; how the Rules for the Use of Force govern force on home soil; and accountability in the ordinary courts. This is the knowledge layer. The drills that put it into practice, holding a line, controlling a cordon, restraining a person, handing a detainee to the police, are physical skills built under qualified supervision and certified in person, taught in the lessons that follow.

By the end you will be able to state which body of law governs a home operation and why the law of armed conflict does not, explain the limits of a soldier's powers and the citizen-in-uniform principle, describe how the Rules for the Use of Force govern force on home soil, and explain how a soldier is held accountable for the force they use.

Key Terms

Domestic law: the ordinary law of the Principality of Kaharagia, the criminal, public-order, and general law of the land that binds every national, governing the soldier on a home operation with no special exemption.
Human rights law: the law protecting the rights of every person, above all the right to life, which holds that force risking death must be no more than absolutely necessary.
Law of armed conflict: the body of law, taught in full in the Law of Armed Conflict course, that governs the conduct of hostilities; it switches on only in armed conflict and does not govern a home operation in peace.
The citizen in uniform: the principle that a soldier aiding the civil power holds no legal powers beyond those of an ordinary national, plus the discipline of minimum force and whatever the law specifically grants for the task, and answers in the ordinary law.
Self-defence: the inherent right of any person to defend themselves and others against an imminent threat of death or serious injury, using no more force than is reasonable in the circumstances as honestly and reasonably believed.
Citizen's power of arrest: the narrow power the law gives any person, not only a constable, to detain someone in defined circumstances, which Kaharagian instructors render as "any-person arrest"; exercised only briefly and concluded by immediate handover to the police.
Police primacy: the principle that on home soil the civil police are the lead agency for public order and law enforcement, and the Army acts only in support, under their direction.
Reasonable officer standard: the objective test against which a use of force is judged afterwards: whether a person of ordinary professional judgement, with the same information and training, in the same circumstances, would have judged that force reasonable.
Rules for the Use of Force (RUF): the Army's standing rules governing the use of force in the ordinary course of duty, including in aid to the civil power, far more restrictive on home soil than the rules of conflict.
Lawful order: an order given by a competent authority that directs a lawful act; the soldier obeys lawful orders and must refuse a manifestly unlawful one.
Accountability: the principle that every use of force is recorded, reported honestly, and answerable afterwards, the soldier answering personally in the ordinary law.

The law that governs a home operation

On home soil, in peace, among its own people, the Army is not at war. The law of armed conflict, treated in full in the Law of Armed Conflict course, does not govern a home operation at all. It switches on only in an armed conflict; outside one, its rules of targeting and attack do not apply, and a soldier who reached for them would be reaching for the wrong book entirely. Riots, disorder, ordinary crime, policing tasks, and aid to the civil authority all fall short of armed conflict and are governed by domestic and human rights law.

This is no fine point for lawyers; it changes the soldier's whole frame of mind, because the two bodies of law rest on opposite assumptions. The law of armed conflict contemplates combat: an enemy who may, within its rules, be attacked because of who they are, even when they pose no immediate threat. Domestic and human rights law assume no enemy at all, only persons with rights, and permit force solely to meet a threat or protect life, and then only the least that will serve. To carry the habits of one into the setting of the other is the deepest error this work permits.

What governs instead is the domestic law of the Principality, the same law that binds every national, together with human rights law. The first is the law of the land: the criminal law forbidding assault and unlawful detention, the public-order law defining what may be done in a crowd, the rules under which any dispute about force is judged. It binds the soldier exactly as it binds the baker or the bus driver, with no military discount. Human rights law supplies the standard force must meet, and bears down hardest where the stakes are highest. Above all it protects the right to life, setting the test for force that risks death not at "reasonable" or even "necessary" but at the higher bar of absolutely necessary: in defence of a person from unlawful violence, to make a lawful arrest, or to quell a riot, with no other course that would have protected life. The question is therefore never "could I have used force?" but "was there any other option that would have protected life?"

The most important consequence is the standing of the people the soldier is among. There is no enemy to target and no combatants. Every person present, peaceful or disorderly, even one acting unlawfully, is a protected person with the right to life. The man throwing a bottle is breaking the law and may, within strict limits, be restrained; he is not an enemy to be attacked, and he does not forfeit his right to life by his disorder. The soldier faces not an adversary to be defeated but fellow nationals to be protected and, where the law allows, restrained. The hard lesson of operations short of war, learned across the Commonwealth tradition, is this: a force that treats the population as the enemy creates enemies where none existed, while one that treats even those temporarily in opposition as fellow nationals keeps the standing on which all its lawful authority rests.

A simple way to hold the distinction is to keep the two settings side by side:

   ON OPERATIONS ABROAD                 |  ON HOME SOIL, IN PEACE
   (armed conflict)                     |  (aid to the civil power)
   ------------------------------------ | ------------------------------------
   Governed by the law of armed         |  Governed by domestic law and
   conflict                             |  human rights law
   There is an enemy                    |  There is no enemy; only nationals
   Combatants may be attacked           |  No one may be attacked; force only
     because of who they are            |    to meet a threat or protect life
   Force directed at the enemy          |  Force is the last resort, the
                                        |    minimum, and proportionate
   Rules of Engagement (ROE) for the    |  Rules for the Use of Force (RUF),
     operation                          |    far tighter than ROE
   The soldier is a combatant           |  The soldier is a citizen in uniform

If a question on home soil can only be answered by reaching across to the left-hand column, the soldier has already gone wrong. Everything on a home operation is decided in the right-hand column, and this lesson works that column out in full.

The limits of your powers: the citizen in uniform

Lesson 01 named the principle; here it is worked out. A soldier on a home operation has no special legal powers. The soldier is not a police officer, and being called out in aid of the civil authority confers no authority over fellow nationals beyond that which any national already holds. In the old and exact phrase the soldier is a citizen in uniform: bound by the ordinary law, answerable in the ordinary courts, clothed in no special immunity. The uniform conveys obligation, not extra liberty. This sits beneath police primacy: the constable holds the statutory powers of arrest, search, entry, and direction precisely because the soldier does not, and the two are kept in separate lanes by design.

This is where soldiers most often overreach. By virtue of being a soldier you hold no general power of arrest, no general power to disperse a crowd, no general power to search a person or premises, and no general right to draw or use a weapon, beyond what any national holds. You cannot detain a man because you dislike his manner. You cannot order a lawful crowd to break up "because I said so". You cannot turn out a person's pockets or enter a building on your own authority. You cannot point a weapon to make a point. Where any of these must be done, the police officer does it.

To a national's ordinary powers two things are added, and only two. The first is the discipline of minimum force, treated in full below. The second is whatever the specific, bounded authorisation of your task expressly grants: a power to control access through a particular cordon, to direct people from a defined area, to escort a convoy, to assist a named police operation. Each grant is fixed in time, place, purpose, and method, and written down, briefed, and signed for before the task begins. It is not a general licence but a single key cut for a single lock. A soldier authorised to control access at one cordon has that power there and nowhere else; step away, and you have the powers of any national and no more. The soldier secures, supports, escorts, and stands; the police arrest, search, and direct.

This limit can feel uncomfortable, and the discomfort is the point. Standing on a line while a man pushes past, knowing you may not seize him, runs against every instinct the uniform builds. But the limit is the constitutional position, not weakness. The Army is trained for the controlled application of lethal force against an enemy, the police for the graduated handling of fellow nationals, and the doctrine keeps each in its lane because the population's consent, on which all lawful policing rests, is something the Army cannot supply and must not spend. The most common cause of misconduct on a home operation is a soldier acting as if the uniform conveys police powers. It does not.

The whole of the soldier's authority on home soil fits on a single page:

   POWERS A SOLDIER DOES NOT HAVE AT HOME (beyond any national):
      - no general power of ARREST
      - no general power to DISPERSE a crowd
      - no general power to SEARCH a person or premises
      - no general power to ENTER or SEIZE
      - no general right to DRAW or USE a weapon
                     ( these belong to the constable, not the soldier )

   POWERS A SOLDIER DOES HAVE AT HOME:
      1. Everything any NATIONAL may lawfully do, and no more
      2. The inherent right of SELF-DEFENCE and defence of others
      3. The narrow CITIZEN'S POWER OF ARREST, with immediate handover
      4. + the discipline of MINIMUM FORCE, binding all of the above
      5. + the SPECIFIC, BOUNDED AUTHORISATION of the written task
           ( fixed in time, place, purpose, and method; briefed; signed for )

   Outside the task authorisation, the soldier has only the powers of any
   other national. The uniform conveys obligation, not extra liberty.

The inherent right of self-defence

One power the soldier never loses, because no national loses it, is the inherent right of self-defence. Nothing in the rules removes the right to defend yourself and others against an imminent threat of death or serious injury. This is not a special military power but the ordinary right of any person. The man who comes at you with a weapon is met not as an enemy on a battlefield but as an attacker any national would be entitled to stop, with the least force that stops him.

The right is real but bounded, and the bounds are what make it lawful. First, the threat must be imminent: happening or about to happen, not feared for later and not already finished. A man walking away is not an imminent threat, however angry he was a moment ago. Second, the defence must be necessary: force is the answer only because nothing short of it, no step back, raised hand, or word, will meet the threat. Third, the force must be no more than is reasonable in the circumstances as you honestly and reasonably believed them to be. The law judges you on the situation as you understood it in the instant, not on facts discovered calmly afterwards; but the belief must be one a reasonable person could have held, not a panic or an excuse. You are not asked to weigh your response to a nicety in the heat of the moment, but to act as a level-headed person would.

Two further limits follow. Defence answers a threat; it does not punish a wrong, and is no licence to settle a score or add a blow once the danger has passed. And the right is time-bound: it lives only while the threat lives. The moment the attacker drops the weapon, turns away, or is subdued, the right is over; force continued past that moment is no longer defence but assault, and the law treats it as assault.

It helps to carry the reasonableness test as a short sequence, asked in order, in the moment:

   THE SELF-DEFENCE TEST  (ask in order, in the instant)

   1. Is there a THREAT, and is it IMMINENT?
         (happening or about to happen, not feared-for-later,
          not already over)
                |  no  --> force is NOT justified; do not use it
                v  yes
   2. Is force NECESSARY to meet it?
         (would a step back, a word, or a raised hand remove
          the danger instead?)
                |  no  --> use the lesser means; force is NOT yet justified
                v  yes
   3. Is this the MINIMUM, REASONABLE force for the threat I
      honestly and reasonably believe I face?
                |  no  --> use less; never more than the threat requires
                v  yes
   4. Use it. STOP THE MOMENT THE THREAT STOPS.
         (the right ends when the danger ends; what follows
          is no longer defence)

Alongside self-defence sits one further ordinary power worth naming, because soldiers meet it on cordon and checkpoint tasks: the citizen's power of arrest, which the law gives any person and not only a constable. In narrow circumstances, where a serious offence is being committed and no police officer is yet present, the law allows any person to detain the offender. A soldier holds this power as any national does, neither more nor less, and it comes with a strict discipline: exercised only for the shortest moment necessary and concluded by immediate handover to the police, who hold the real power of arrest. A soldier does not run a holding cell, does not question, and does not detain a moment longer than it takes to pass the person to a constable. Lesson 07 teaches the handling and handover in full.

How the Rules for the Use of Force govern force at home

Where force may be used at all on home soil, the Rules for the Use of Force govern how, far more narrowly than the rules of conflict. The course returns to the RUF in detail, and the soldier carries them on a pocket card briefed before every task. What matters here is their shape: a small number of principles that every use of force must satisfy together, all at once. Each is a separate gate the action must pass.

Lawful authority: force is used only under the authority of the law and lawful orders, the Army acting in support of, and subordinate to, the lawful civil authority, with the civil police holding primacy on home soil. Necessity: force is used only when necessary to achieve a lawful aim, and only when lesser means have failed or would plainly fail. Minimum force: no more force than is necessary, and for no longer; force is reduced or stopped the moment it is no longer needed. Proportionality: the force is proportionate to the threat or the aim, and never more. Distinction: force is directed only at those who present a threat or are a lawful object of it, and care is taken to protect everyone else; in a crowd of the curious, the elderly, the frightened, and children this is demanding, because force proportionate against one person can be wholly disproportionate against all those it also touches. Humanity: force is never used to punish, to humiliate, or in cruelty, and the wounded and those who have ceased to resist are protected and cared for. Accountability: every use of force may be questioned afterwards, the soldier answerable for it, with honest, accurate reporting following every incident.

Read together, these draw a deliberately tight standard: on home soil force answers a threat or protects life and nothing else. The deepest standard applies to the gravest force: lethal force is permitted only against an imminent threat of death or serious injury, and only when nothing less will serve. This is the same high test human rights law sets for force that risks life, that it be no more than absolutely necessary. Where armed conflict allows force against an enemy who presents no immediate personal threat, the home standard is far stricter: the difference between the two columns of the figure above, carried into the moment force is used.

To make this practical the RUF set out a graduated response, a ladder the soldier climbs only as far as necessity demands and steps back down the moment it allows: presence, then verbal challenge and de-escalation, then control, then defensive force, then less-lethal means where issued, and only at the top, as a last resort, lethal force. The soldier challenges and warns before using force whenever it is safe and possible. The ladder is not a staircase that must be climbed one tread at a time: a soldier facing an immediate, grave threat is not required to attempt a lower step where that would be plainly unsafe or futile, and may go straight to the level the threat requires; but necessity, minimum force, and proportionality apply at every level. The movement runs both ways. A line that has been pushed and has held returns to its still, dignified default, and the hardest discipline in this work is often the step down, lowering posture after raising it.

The graduated response, from the lowest level to the last resort:

   ^   6. LETHAL FORCE        last resort only; an imminent threat of
   |                          death or serious injury; nothing less serves
   |   5. LESS-LETHAL MEANS   where issued and authorised
   |   4. DEFENSIVE FORCE     to meet an assault
   |   3. CONTROL             proportionate, trained restraint
   |   2. VERBAL              challenge, warning, de-escalation
   |   1. PRESENCE            the disciplined, visible Army
   +--------------------------------------------------------------------
       Rise only as far as necessity requires.
       Step back down the moment it allows.
       The principles bind at EVERY level: necessary, minimum,
       proportionate, accountable.

The soldier carries all this as a short card to hold under pressure: use only necessary, minimum, proportionate force; you always have the right to defend yourself and others against an imminent threat to life; challenge and warn whenever it is safe to; if you must fire, fire aimed, controlled shots at the threat only and mind what is beyond it; protect the wounded and anyone who has stopped resisting; stop as soon as the threat stops; and report every use of force honestly. These standing rules are overridden only by lawful mission-specific Rules of Engagement issued as orders, and on a home operation no such Rules displace the principles above.

Acting on lawful orders, and refusing the unlawful

A soldier acts under orders, and on a home operation under the direction of the civil authority through the chain of command. This is part of everything above, not in tension with it. The cordon you hold and the access you control reach you as orders, and obeying them is how the Army stays subordinate to the lawful civil power rather than a law unto itself. Obedience is itself a protection: it keeps a soldier from self-tasking, from acting on a misunderstanding, and from being drawn into a quarrel that is not the Army's. The liaison between police lead and military commander is slow by design, so that no soldier acts on direction that has not been properly given and understood.

But obedience has a limit, and the limit is the law. A soldier obeys lawful orders and must refuse a manifestly unlawful one. "I was ordered to" is no defence to an unlawful act: the same law that binds the soldier binds the order, and no order can authorise what the law forbids. An order to strike a person who poses no threat, to fire where the conditions for lethal force are plainly not met, to mistreat a detainee, or to use force as punishment is not a hard order to weigh; it is unlawful, and the duty is to refuse it. The word manifestly matters: the soldier is not asked to second-guess every tasking or referee fine legal questions on the line, but to recognise the order plainly wrong on its face and decline it. The same duty runs to the conduct of others: where a soldier sees a comrade or superior begin to mistreat a person, the duty is to intervene where it is safe and to report it through the chain of command, or by a parallel route where the chain is itself implicated. Silence in the face of plain wrongdoing is not loyalty but misconduct, and it has been the basis of proceedings in other forces. Real loyalty protects the team's standing in law; covering up wrongdoing destroys it.

Accountability: you answer in the ordinary law

The principle that gives all of this its force is accountability. Because the soldier acts with no special licence, the soldier answers personally, and in the ordinary law, for the force they use. No military exemption lifts the citizen in uniform out of reach of the courts that judge every other national. Unlawful detention is a criminal offence whoever commits it; an assault is an assault whether the hand that strikes wears a uniform or not. The soldier is judged by the reasonable officer standard: not whether the soldier personally believed the force reasonable, but whether a person of ordinary professional judgement, holding the same information and training, in the same circumstances, would have judged it reasonable. It is measured by what the soldier reasonably knew or should have known at the time, generous about the pressure of the moment but unforgiving of force no level-headed professional would have used.

In practice the soldier must always be able to answer three questions about any force used. What did I see, hear, or know that caused me to act? What lawful purpose did my action serve? Why did I judge this level of force, and not a lower one, to be necessary? A soldier who can answer those clearly has acted within the law; a soldier who cannot has not. Carry a wider test alongside them: would this action be defensible to a court, to a coroner where life was lost, and to a fair-minded national told the full facts? Force that passes all three audiences is sound; force that passes none should never have happened.

Accountability rests on the honest record. Every use of force is recorded and reported through the chain of command as soon as it can be, factually and fully, stating what was done, why, and with what effect. The contemporaneous note in the section notebook is the foundation of every later document: made as close to the event as practicable, in ink, signed and timed, with opinion kept separate, answering what happened, when to the minute, where to the metre, who was involved by description rather than assumption, and what was done in response, including who was informed. A clear, truthful note is the soldier's best protection against later misrepresentation; a report that concealed or softened what happened leaves the soldier far worse off when the truth surfaces through complaint, inquiry, or the camera that records almost everything now. Where a body-worn camera is issued it runs throughout but does not replace the notebook, and the soldier should assume the conduct of the next sixty seconds will be visible to the whole nation by the end of the day. The soldier reports honestly because it is right, and because honesty is the only ground on which the trust the Army depends upon can stand.

In Practice: The Soldier Who Knew His Powers

A section of the Royal Kaharagian Army is helping the civil police hold a perimeter during a tense civil incident in the centre of a large town. A soldier stands on an outer cordon under a defined task: the written tasking and briefing authorise him to control access and call the police lead, and nothing more. Before he took post the section commander walked the chain of authority with the section, so each could state in one sentence what the task was and where its authority ended. The soldier knows who requested this, who authorised it, what its written purpose is, and when it ends, and he carries the Rules for the Use of Force in his pocket and in his head.

A man, angry and shouting, pushes through the line and walks past him into the controlled area. The soldier feels the pull to seize him, to assert the authority the uniform seems to promise. He does not. His task lets him control access and call the police lead, not arrest at will. The man is trespassing, not threatening anyone's life, so self-defence does not arise: without an imminent threat of death or serious injury, force is not his to use, and a court would ask what threat justified laying hands on a man who threatened no one. So he stays on the lowest rungs of the ladder, presence and voice: he calls the police lead, keeps the man in clear view, and places himself calmly between the man and the protected point, blocking him without striking him. "Sir, the area beyond me is closed. Please wait here; the police officer is coming." He lets the constable, who holds the power of arrest, take it on, and notes the time, the place, what the man did, what he himself did and said, and that he called the lead.

Later that hour the picture changes entirely. Another man comes at him with a raised iron bar, plainly meaning grave harm and closing fast. Now the test answers differently at every step. There is a threat, and it is imminent. A word will not meet a swung iron bar, so force is necessary. The soldier defends himself with the least force that stops the threat and no more; he is not required to climb the ladder rung by rung against an immediate, grave danger, and he meets it at the level it demands. The instant the man drops the bar and the threat ends, the soldier's right to use force ends with it, and he stops; what he does next is control and handover, not punishment. He records this too, at once: what he saw, the purpose his force served, why a lower level would not have done, and the effect.

Two encounters, the same soldier, the same hour, with the line between them drawn exactly where the law draws it: not where temper or pride would draw it, but at the presence or absence of an imminent threat to life. That line, known beforehand and settled in calm, is what let him stand still when standing still was right and act decisively when acting was right. He could answer, for everything he did, what he saw, what lawful purpose it served, and why that level of force and no other. That is what this lesson is for.

Check Your Understanding

Which body of law governs a soldier on a home operation, and why does the law of armed conflict not apply? What follows from this for the standing of every person present, including a person acting unlawfully?
Explain the citizen-in-uniform principle. What powers does a soldier hold on a home operation, and what is added to the ordinary powers of a national? Name the powers a soldier does not hold by virtue of the uniform.
How do the Rules for the Use of Force govern force on home soil, and how does this differ from the use of force in armed conflict? Under what single condition is lethal force permitted, and what three questions must a soldier always be able to answer about any force used?

Reflection (write a short paragraph): This lesson says a soldier must always be able to answer, for any force used, what they saw or knew, what lawful purpose the force served, and why a lower level of force would not have done. Think about why being able to answer these questions matters, both for the soldier's own protection and for the Army's standing in the eyes of the nation. How does settling beforehand that you are a citizen in uniform, answerable in the ordinary law, change how you would act when provoked, when tempted to assume a power you do not hold, or when given an order that is plainly wrong?

Summary

On home soil there is no armed conflict, so the law of armed conflict does not govern; the operation is governed by the domestic law of the Principality and human rights law. Carrying battlefield habits onto home soil is the gravest error this work permits. Every person present, even one acting unlawfully, is a protected person with the right to life.
Force that risks death must be no more than absolutely necessary, so the question is never "could I use force?" but "was there any other way to protect life?"
A soldier on a home operation is a citizen in uniform with no special powers: no general power of arrest, dispersal, search, entry, seizure, or use of a weapon beyond any national. To a national's ordinary powers are added only the discipline of minimum force and whatever the specific, bounded, written task expressly grants. The constable holds the police powers; the soldier secures, supports, escorts, and stands.
The inherent right of self-defence is retained on the same terms as any national: against an imminent threat of death or serious injury, necessary, using no more force than is reasonable in the circumstances as honestly and reasonably believed, ending the moment the threat ends, never used to punish. The narrow citizen's power of arrest applies briefly and is concluded by immediate handover to the police.
The Rules for the Use of Force apply their principles together: lawful authority, necessity, minimum force, proportionality, distinction, humanity, and accountability. Force meets a threat or protects life only, through a graduated response climbed only as far as necessity demands and stepped down the moment it allows, with lethal force only against an imminent threat of death or serious injury and only when nothing less will serve.
A soldier obeys lawful orders and must refuse a manifestly unlawful one; "I was ordered to" is no defence, and the duty runs also to intervening in and reporting plain wrongdoing by others.
Every use of force is recorded and reported honestly, and the soldier answers personally and in the ordinary law, judged by the objective reasonable officer standard. The soldier must always be able to say what they saw or knew, what lawful purpose the force served, and why a lower level would not have done; the honest, contemporaneous record is both the basis of accountability and the soldier's best protection.

The Law and Your Powers