Editing Shell (projectile) (section)

===Cluster and sub-munition===
Cluster shells are a type of carrier shell or cargo munition. Like [[cluster bomb]]s, an artillery shell may be used to scatter smaller sub-munitions, including anti-personnel [[grenade]]s, anti-tank top-attack munitions, and [[land mine|landmines]]. These are generally far more lethal against both [[armored fighting vehicle|armour]] and [[infantry]] than simple high-explosive shells, since the multiple munitions create a larger kill zone and increase the chance of achieving the direct hit necessary to kill armour. Many modern armies make significant use of [[cluster munition]]s in their artillery batteries.

Artillery-scattered mines allow for the quick deployment of [[minefield]]s into the path of the enemy without placing engineering units at risk, but artillery delivery may lead to an irregular and unpredictable minefield with more unexploded ordnance than if mines were individually placed.

Signatories of the [[Convention on Cluster Munitions]] have accepted restrictions on the use of cluster munitions, including artillery shells: the treaty requires that a weapon so defined must contain nine or fewer submunitions, which must each weigh more than 4 kilograms, be capable of detecting and engaging a single target, and contain electronic self-destruct and self-deactivation systems. Submunitions which weigh 20&nbsp;kg or more are not restricted.