Cover is protection of the body from weapon effects provided by terrain, objects or structures. Against bullets and fragments, it works when sufficiently resistant material lies in their possible path and stops them before they reach the body. During evasion, cover helps prevent injury and preserve the individual’s ability to act. Its protection depends on the threat, the material and the person’s actual position.
Cover and concealment serve different purposes
Cover provides protection from weapon effects; concealment provides protection from observation. Bushes, shadows or camouflage netting may obscure a person’s outline while allowing a bullet to pass through. Conversely, a sufficiently resistant obstacle can shield the body even when the position remains visible. Both functions matter to isolated personnel: remaining hidden and using material that can physically shield them where weapon effects threaten.
Physical protection requires more than breaking a line of sight. A possible projectile path must pass through the protective part of the obstacle, and that part must resist the incoming bullet or fragment. An earth bank, a boulder or a substantial structural element may provide such an obstacle. The material’s name alone cannot establish whether it will stop the particular threat. The obstacle’s thickness and construction, together with the projectile’s shape, composition, mass and impact velocity, affect resistance to penetration.
Material, fragments and blast pressure
Continuous solid sections of an existing wall have to be assessed differently from thin cladding, hollow sections or openings. Bullets can penetrate wood. Brittle masonry blocks can break on impact and produce fragments that cause injury. An opaque wall or a broad tree trunk therefore cannot be assigned a reliable protection level from appearance. When the internal construction or projectile threat is unknown, the resistance remains unconfirmed and additional shielding by terrain should be sought.
Fragments from an explosion and flying debris cause injury through impact. Frontal cover may intercept those paths while fragments arriving over an open top or from an unprotected side can still reach the body. Protection to the front, sides, rear and overhead must be considered separately. An open depression provides no overhead shielding even when its edge screens the body from a lateral direction.
An explosion’s pressure wave is a further effect: sudden overpressure can injure the body, and blast wind can displace it. An obstacle that resists individual bullets or fragments therefore does not establish adequate protection from blast pressure. Confined spaces bring together the hazards of pressure, debris and possible structural collapse. A damaged building also requires attention to loose masonry and structural elements above the person; being hidden indoors is insufficient as a selection criterion.
Check direction and body position
Cover works through a particular spatial relationship. Being behind an obstacle means being on the side away from the threat under consideration and within the area that the obstacle actually shields. Effects arriving from a higher or lateral direction may expose a body part that was previously protected. A narrow gap between two solid sections also leaves a possible projectile path open. Eye height describes only the line of sight; knees, feet or elbows may protrude elsewhere.
The individual’s assessment starts within the shielding already available: from which directions is a threat apparent, which directions remain open, and what continuous section of material lies in between? Body position is checked next. The head, shoulders, elbows, knees and feet need to remain within that area; a bulky rucksack must not lift the body above the edge or prevent a low position. A small shift can improve shielding or open a gap to the side. When the threat direction is uncertain, the open sides remain part of the assessment.
Observe and leave cover
Observation requires a view of the surroundings and may expose parts of the body. A low, concealed observation position is useful during evasion. Before looking over an edge or around its side, the person needs to recognise which body parts will leave the shielded area. A position farther back or lower down may allow a limited view without exposing the whole upper body. The view obtained does not protect the head exposed to obtain it.
Before necessary movement, the next reachable shielding position and the route to it are considered. A series of good individual cover positions can contain exposed gaps. At an opening, road crossing or the end of a wall, the material between the body and the threat may be absent. Where terrain and physical condition allow, a route with as much continuous shielding as possible is chosen. There also needs to be a way out: a well-shielded endpoint that the person cannot leave as the threat changes may block further evasion.
Recognise failure and reassess
Penetration, pieces emerging on the person’s side, growing damage or the loss of a protective edge reveal specific weaknesses. A new threat from the side or above can have the same consequence even when the material remains unchanged. Body position, the usable protective section and a reachable alternative location then need reassessment. Moving can itself create exposure; a more substantial obstacle farther away is a usable alternative only when the route and the person’s mobility permit it.
An undamaged surface that has not been hit provides no evidence of its resistance. A single stopped projectile also describes only that impact. With unknown material, continuous terrain shielding and reducing exposed body area remain actions available to the individual. If only concealment is available, it is used for concealed observation and to look for a continuation that can physically shield the body. The head or torso is not exposed to test the supposed cover.