Royal Army College

Lesson Overview

The cold does not only attack the soldier; it attacks everything the soldier carries and uses. Batteries fail, lubricants stiffen, fuel and water freeze, metal grows brittle and burns bare skin, screens and optics fog and ice, and vehicles will not start, all because the cold works on equipment as surely as on the body. The earlier lessons taught a member to keep themselves effective in the cold; this one teaches them to keep their equipment effective too, because a member who has mastered their own survival but whose radio is dead, whose torch has failed, and whose weapon will not function is only half-prepared, and may be worse off than before, since they were relying on kit that the cold has quietly defeated. This lesson is about how cold affects equipment and how to keep it working: the common ways the cold degrades or stops the things a member depends on, and the disciplines of preparing, protecting, and maintaining equipment so that it works when it is needed. As with the rest of the course, this is the knowledge layer; the specific care of particular equipment, weapons above all, is taught and certified in person, and the weapon-specific cold drills belong with the Weapon Handling and Safety course.

The lesson takes equipment in the cold in three parts. First, how the cold attacks equipment: the common effects, batteries losing power, lubricants and fuels thickening or freezing, water and liquids freezing, materials growing brittle, condensation and ice forming, so the member understands that equipment failure in the cold is normal and to be expected and guarded against, not a surprise. Second, keeping equipment working: the disciplines of protecting kit from the cold, keeping batteries and essential items warm, managing condensation, adapting maintenance to the cold, and the particular care of the things a member most depends on, the weapon, the radio, the light, and the means of making heat. Third, the cold member and cold kit together: that the member operates equipment in the cold with cold hands, reduced dexterity, and through gloves, and that kit and personal cold discipline are one system, so that keeping equipment working is part of the same routine that keeps the member working. Throughout, the lesson holds that in the cold a member must look after their equipment as deliberately as themselves, that the failures are predictable and largely preventable, and that the kit a life may depend on, the radio that calls for help, the weapon that must function, the light that finds the casualty, is exactly the kit the cold most needs to be kept from defeating.

By the end you will be able to explain how the cold commonly attacks equipment, batteries, lubricants, fuels, liquids, materials, and through condensation, and why such failure is to be expected; keep equipment working by protecting it, keeping essential items warm, managing condensation, and adapting maintenance to the cold; care for the things most depended on, the weapon, radio, light, and heat source, with the weapon-specific drills certified in person; operate equipment with cold hands and through gloves; and explain why keeping kit effective is part of the same discipline that keeps the member effective.

Key Terms

Cold-degraded equipment: equipment that the cold has weakened or stopped, through drained batteries, stiffened lubricants, frozen liquids, brittle materials, or ice and condensation.
Battery loss in cold: the way cold sharply reduces the power and life of batteries, so that lights, radios, and other electronics fail far sooner in the cold than in the warm.
Lubricant stiffening: the thickening of oils and greases in the cold, which can slow or jam moving parts, including in a weapon, so cold-weather lubrication may differ from warm.
Freezing of liquids: the freezing of water, fuel, and other liquids in the cold, which can burst containers, block fuel and water systems, and deny the member drink and fuel.
Brittleness: the way cold makes some materials harder and more brittle, so that parts which flex in the warm may crack or break in severe cold.
Condensation and icing: the forming of moisture and then ice when cold equipment meets warmth or breath, fogging optics and screens and wetting the inside of kit.
Keeping it warm: the discipline of keeping batteries and essential small items close to the body or otherwise warm, so they keep working when needed.
Cold-weather maintenance: the adaptation of ordinary care and maintenance to the cold, including lubrication, the management of condensation, and the protection of kit from the elements.
Bare metal in the cold: the danger that very cold bare metal can burn or stick to bare skin, so cold metal is handled with gloves and care.
Kit and member as one system: the principle that the member operates kit with cold hands and reduced dexterity, so keeping equipment working is part of the same cold routine that keeps the member working.

How the cold attacks equipment

The first thing to understand is that the cold attacks equipment as a matter of course, by several predictable mechanisms, so that equipment failure in severe cold is not bad luck but the expected behaviour of kit that has not been protected against it. A member who knows the common ways the cold defeats equipment can guard against them; one who does not is repeatedly surprised by kit that worked fine in the warm and has quietly failed in the cold. Several effects recur.

Batteries are the first and most important. Cold sharply reduces the power and life of batteries, so that the lights, radios, and other electronics a member depends on fail far sooner in the cold than in the warm, sometimes alarmingly so, a battery that would last a long task in mild weather draining in a fraction of the time when cold. Lubricants stiffen: the oils and greases that let moving parts work thicken in the cold and can slow or jam mechanisms, which matters greatly for a weapon, whose action may be sluggish or stop if lubricated as for warm weather. Liquids freeze: water, fuel, and other liquids freeze in the cold, which can burst the containers that hold them, block the systems that carry them, and deny the member the drink and the fuel they were counting on, a frozen water bottle or a frozen fuel line being a real and common cold failure. Materials grow brittle: cold hardens some materials so that parts which bend in the warm may crack or snap in severe cold, and kit must be handled with that in mind. And condensation and icing form whenever cold equipment meets warmth or breath: optics and screens fog and then ice, the inside of kit brought from cold into warmth dampens, and breath freezes on what it touches, so that sight and electronics are degraded by the moisture the temperature difference creates. To these the member adds a hazard to themselves from equipment: very cold bare metal can burn or stick to bare skin, so cold metal is handled with gloves and care. Understanding all of this leads to the governing attitude of the lesson: in the cold, expect equipment to be attacked, and guard against it, rather than trusting kit to behave as it did in the warm. The failures are predictable, which is precisely why they are largely preventable by the disciplines the next section teaches.

   HOW THE COLD ATTACKS EQUIPMENT  (predictable -> preventable)

   BATTERIES ........ power + life sharply REDUCED -> lights, radios,
        electronics fail far sooner than in the warm (the big one)
   LUBRICANTS ....... oils/greases STIFFEN -> slow or jam moving parts
        (matters greatly for a weapon's action)
   LIQUIDS .......... water, fuel, etc. FREEZE -> burst containers,
        block systems, deny drink + fuel
   MATERIALS ........ grow BRITTLE -> parts that flex in warmth crack
        or snap in severe cold
   CONDENSATION/ICE . cold kit meets warmth/breath -> optics + screens
        FOG then ICE; the inside of kit dampens
   + BARE METAL ..... very cold metal can BURN or STICK to bare skin
        -> handle with gloves and care

   GOVERNING ATTITUDE: in the cold, EXPECT equipment to be attacked and
   guard against it -- don't trust kit to behave as it did in the warm.

Keeping equipment working

Because the cold's attacks on equipment are predictable, they are largely preventable, and keeping kit working in the cold is a set of disciplines a member applies as routinely as they apply the cold disciplines to themselves. The first and most rewarding is keeping essential items warm. Since cold drains batteries and freezes liquids, the member keeps the things that must keep working close to the body's warmth or otherwise insulated: spare batteries and the radio or torch kept inside layers near the body rather than in an outside pocket, the water bottle carried where body heat keeps it from freezing or kept from freezing by other means, small essential items protected from the full cold. A battery kept warm lasts far longer than one left in the cold, and a member who keeps their essential electronics and liquids warm has prevented the commonest cold equipment failures before they happen. This single habit, keep the essential kit warm, does much of the work of keeping equipment effective in the cold.

The second discipline is protecting equipment from the elements and managing condensation. Kit is kept dry and sheltered from the worst of the cold, snow, and wet where it can be, because wet kit freezes and degrades, and condensation is managed by understanding when it forms, chiefly when cold kit meets warmth, so that optics and electronics brought from cold into a warm space, or breathed on, fog and ice. The member manages this by keeping cold kit cold until needed where that avoids the problem, by clearing and protecting optics and screens, and by being aware that kit brought into warmth will sweat and must be dried. The third is adapting maintenance to the cold. The care and maintenance taught for equipment generally is adjusted for the cold: lubrication suited to the cold rather than the warm, so stiffened oil does not jam a mechanism; the clearing of ice and snow from kit before it causes a fault; and the extra checking that the cold's effects demand. The fourth is the particular care of the things a member most depends on, because not all kit matters equally, and the items a life may hinge on get the most protection. The weapon must function, so it is protected from the cold and the wet, lubricated as the cold requires, and cleared of ice and condensation, with the specific cold drills for the service weapon taught and certified in person and belonging with the Weapon Handling and Safety course. The radio must work to call for help, so its batteries are kept warm and spare power is carried. The light must work to find a casualty or the way, so it too is protected and its batteries kept warm. And the means of making heat, the stove and fuel, must work, so the fuel is kept from freezing and the stove maintained. The member preparing and running a cold task gives these life-critical items, the weapon, the radio, the light, the heat source, the most care, because they are exactly the kit the cold most needs to be kept from defeating. Applied together, these disciplines, keep the essential warm, protect from the elements and manage condensation, adapt maintenance to the cold, and guard most the kit most depended on, keep equipment working in conditions that would otherwise defeat it, which is the equipment half of staying effective in the cold.

The cold member and cold kit as one system

Keeping equipment working in the cold cannot be separated from the cold member operating it, and the final part of the lesson holds the two together. A member in the cold operates their equipment with cold hands, reduced dexterity, and often through gloves, and this changes how kit must be handled and prepared. Fine tasks that are easy with warm bare hands, changing a battery, working a fiddly catch, operating a small control, are hard or impossible with cold, clumsy fingers or through thick gloves, and a member who has lost dexterity to the cold may fail at a simple equipment task at the moment it matters. So the member prepares for this: keeping the hands as warm and functional as the cold disciplines allow, arranging and preparing kit so it can be worked with reduced dexterity, doing fiddly equipment tasks while the hands are still warm enough rather than leaving them until the fingers have gone, and accepting that everything takes longer and is clumsier in the cold and planning for that. The cold hands of Lesson 06 and the cold kit of this lesson are one problem: the member must keep both themselves and their equipment functional, and the two are managed by the same routine.

This is the deeper point of the lesson: kit and personal cold discipline are one system. The same routine that keeps the member effective, the layering, the drying, the feeding, the warming, the watching, extends naturally to the equipment: keeping the essential kit warm against the body is part of the same warmth the member keeps for themselves; protecting kit from wet is the same instinct as keeping oneself dry; the warming halts that restore the member are also when batteries and the member's hands can be warmed enough to do equipment tasks. A member who keeps a good cold routine keeps their equipment working as part of it, and a member who lets their own cold discipline slide lets their equipment fail too, because the cold that defeats a careless member defeats their neglected kit alongside them. So the member treats their equipment as part of what the cold routine must keep effective: not a separate chore, but the same discipline of defeating the cold applied to the kit a life may depend on as well as to the body. The member who has mastered this keeps both self and equipment working through the cold, and arrives at the task, or at the casualty, with a warm radio that calls for help, a torch that lights the ground, a weapon that functions, and a stove that makes heat, because they looked after their kit with the same deliberate discipline they applied to themselves. That, and not toughness, is what keeps a member fully effective in the cold, equipment and all.

   COLD MEMBER + COLD KIT = ONE SYSTEM

   the member operates kit with COLD HANDS, reduced dexterity, through
   GLOVES -> fine tasks (change a battery, work a catch) get hard/impossible
        -> keep hands warm + functional; prepare kit to be worked with
           reduced dexterity; do fiddly tasks WHILE hands are still warm;
           plan for everything taking longer

   KIT + PERSONAL COLD DISCIPLINE ARE ONE ROUTINE:
     keep essential kit warm = the same warmth you keep for yourself
        protect kit from wet = the same instinct as keeping dry
        the warming halt = when batteries AND hands get warm enough to work
   -> a good cold routine keeps the kit working as part of it; a member
      whose own discipline slides lets the kit fail too.

   arrive at the casualty with a WARM RADIO, a working TORCH, a
   functioning WEAPON, a lit STOVE -- because you looked after the kit
   with the same discipline as yourself. that, not toughness, is being
   fully effective in the cold.

In Practice: The Radio That Still Worked

A member is part of a team out on a long, hard winter night, and the difference between them and a less prepared member shows not in toughness but in whether their kit still works when it is needed. From the start, this member treats their equipment as the cold treats it: as something under attack. They know the cold drains batteries fast, so they keep their radio and torch, and their spare batteries, inside their layers close to the body's warmth rather than in an outside pocket where the cold would kill them, and they keep their water from freezing the same way. They have lubricated their weapon as the cold requires, not as for a mild day, so its action will not be sluggish or jammed by stiffened oil, and they protect it from the wet and clear it of snow and ice. They manage condensation, mindful that kit brought from the cold into warmth will sweat, and they handle very cold bare metal with gloves so it does not burn their skin.

Through the night, the member keeps their equipment working as part of their own cold routine. At the warming halts that keep them effective, they also warm their hands enough to do the fiddly equipment tasks, changing a battery while their fingers still work rather than waiting until they have gone clumsy with cold, and they keep the essential kit warm against the body between times. When, late in the night, the team finds the person they were searching for and must call for help, the member's radio works, because its batteries were kept warm and it was protected, and their torch lights the casualty and the ground, because it too was looked after. The call goes through, the light does its work, and the rescue proceeds. A different member on the same night, who left their batteries in an outside pocket, lubricated their weapon as for summer, and let their kit take the full cold, finds at the crucial moment that their radio is dead and their torch faint, and the kit they were relying on has been defeated by the cold exactly when it was needed.

The value is a member fully effective in the cold, equipment and all, because they looked after their kit with the same deliberate discipline they applied to themselves. The cold's attacks on their equipment were predictable, so they prevented them, by keeping the essential kit warm, protecting it, adapting its maintenance to the cold, and guarding most the items a life depended on. The other member was no less tough, but toughness does not keep a battery warm or a weapon lubricated for the cold, and their dead radio and faint torch were the harvest of treating equipment as if the cold would not touch it. This member understood that kit and personal cold discipline are one system, kept both working through the night, and so arrived at the casualty with the radio, the light, the weapon, and the heat that the rescue needed, which is the whole point of keeping equipment effective in the cold.

Check Your Understanding

Explain the common ways the cold attacks equipment, batteries, lubricants, liquids, materials, and condensation, and the hazard of cold bare metal. Why is equipment failure in severe cold "to be expected and guarded against, not a surprise," and how does understanding the mechanisms make the failures preventable?
Describe the disciplines of keeping equipment working in the cold: keeping essential items warm, protecting kit and managing condensation, adapting maintenance, and guarding most the items most depended on. Why is "keep the essential kit warm" the single most rewarding habit, and which items get the most care and why?
Explain how a cold member operates equipment with cold hands and through gloves, and what they do about it. Why are "kit and personal cold discipline one system," and how does a good cold routine keep equipment working as part of itself?

Reflection (write a short paragraph): This lesson argues that the cold attacks everything a member carries as surely as it attacks the body, and that a member who has mastered their own survival but whose radio is dead and weapon will not function is only half-prepared. Think about how easy it is to look after yourself in the cold and forget that the kit you are relying on is being defeated at the same time, and why the failures, drained batteries, frozen water, a jammed action, are so predictable and so preventable. Why is keeping your equipment working part of the same discipline that keeps you working, and what would it take to look after the kit a life may depend on, the radio, the weapon, the light, with the same care you give yourself?

Summary

The cold attacks equipment as surely as it attacks the body, by predictable mechanisms: batteries lose power and life sharply, lubricants stiffen and can jam mechanisms (including a weapon's action), liquids like water and fuel freeze and burst or block, materials grow brittle, and condensation forms and ices on optics and electronics; very cold bare metal can also burn or stick to skin. So equipment failure in severe cold is to be expected and guarded against, not a surprise, and because it is predictable it is largely preventable.
Keep equipment working by four disciplines: keep essential items (batteries, radio, torch, water) warm against the body, the single most rewarding habit; protect kit from the elements and manage the condensation that forms when cold kit meets warmth; adapt maintenance to the cold, including cold-suited lubrication and clearing ice; and give the most care to the items a life may depend on, the weapon (with cold drills certified in person, per Weapon Handling and Safety), the radio, the light, and the heat source.
A cold member operates equipment with cold hands, reduced dexterity, and through gloves, so fine tasks get hard: keep the hands functional, prepare kit to be worked with reduced dexterity, do fiddly tasks while the hands are still warm, and plan for everything taking longer and being clumsier.
Kit and personal cold discipline are one system: the same routine that keeps the member effective, warmth, dryness, the warming halts, extends to the equipment, so a good cold routine keeps the kit working as part of it, and a member whose own discipline slides lets the kit fail alongside them.
Keeping equipment effective is the equipment half of staying effective in the cold; the member who looks after their kit with the same deliberate discipline as themselves arrives at the task, or the casualty, with a warm radio, a working torch, a functioning weapon, and a lit stove, which toughness alone cannot provide. This is the knowledge layer; the specific care of particular equipment, weapons above all, is certified in person.
Cross-references: protects the kit that the welfare and rescue of Lesson 10 depends on (the radio that calls for help, the light that finds the casualty) and that the planning of Lesson 08 prepares; extends the maintenance and the cold-hands work of Lessons 06 and 07; the weapon-specific cold drills belong with Weapon Handling and Safety (FLD 210); and the warmth and dryness disciplines are those of Lessons 02 and 04 applied to equipment.

Equipment and Kit in the Cold