All round defence

All-around defense[1] and perimeter defense[2] are synonyms for one category of the (relative) positioning of defensive fighting positions that are supposed to give military units and sub-units the ability "to repel an attack from any direction by being organized or sited for all round defence".[3] This defense can be used by military units from squad up.

This defense is adopted so that the unit is capable of observing all ground and directing fire onto the observed ground.

Definition

This defense can be defined as "a defense without an exposed flank, consisting of forces deployed along the perimeter of the defended area".[4]

Positioning of the outer defensive fighting positions

The positioning of the outer defensive fighting positions—relative to each other—of a platoon, can be traced as "circular or triangular rather than linear",[5] from a bird's-eye view.

In a circle

One version of a specific type of layout of fighting positions, consists of soldiers forming a wide circle around the soldier in charge (and radioman etc.) with a spacing typically of 3–4 metres between each person (on the circle's circumference). In situations with more than one platoon or squad, more than one all round defence will typically be formed about 20 metres away from each other. It is a useful formation because it allows a full 360° arc of fire, and because everybody is spread out, if the formation is attacked, by direct or indirect fire, the formation will minimise casualties.

Without cover

Using one's body to shield others, is not a defining characteristic of perimeter defense.—Kneeling soldiers are more exposed to incoming artillery- or gunfire, than prostrate ones—but they have a better view of the perimeter, and a relative ease of evacuation. (The fireteam is from Norwegian Army 2nd Battalion.)

When a group of soldiers relocate as a part of a defensive operation, a perimeter defense can be temporarily maintained without cover.

This defense is typically used in any situation where a small unit would need to regroup—including after an attack.

See also

References

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