A ranged weapon is any weapon that can engage targets beyond hand-to-hand distance, i.e. at distances greater than the physical reach of the weapon itself. It is sometimes also called projectile weapon (missile weapon) because it typically works by launching projectiles (missiles), though a directed-energy weapon (which doesn't involve projectiles) technically is also a ranged weapon. In contrast, a weapon intended to be used in hand-to-hand combat is called a melee weapon.
Ranged weapons give the attacker an advantage in combat, since the target is often getting hit from beyond immediate visual range, and therefore has less time to react and more difficulty defending and hitting back effectively. It also puts distance between the attacker and the opponent, which is a safer combat option since the close physical contact during melee combat often puts the attacker within the immediate striking range of enemy counterattack, and thus at an equal risk of getting hurt or killed.
The line between ranged and melee weapons is not entirely definite; for instance, spears, axes, knives and daggers can be used for both throwing and stabbing, depending on purpose and situation; and a ranged weapon can also be used as a melee weapon in close encounters, such as a rifle being used for melee with its buttstock and a fixed bayonet, handguns can be used as an improvised hammer and even an arrow can be used for stabbing in desperate situations. Early ranged weapons often included specifically designed hand-thrown weapons such as javelins, slings and darts, as well as more complex elastic weapons such as slingshots and bows; and siege engines like stone throwers, catapults, ballistas and trebuchets. These ranged weapons were extremely effective in combat, especially when used en masse, as they gave the wielder opportunity to launch multiple rounds of attack before an enemy armed with melee weapons or shorter-ranged missile weapons could even get close enough to pose a threat.
After the invention of gunpowder and the development of firearms, gun-type ranged weapons became the dominant weapon of choice in armed conflicts, even in close combat. In modern warfare, ranged weaponry is also used both tactically and strategically in the form of long-range artilleries, rockets and guided missiles. Maximum effective range of a weapon is the greatest distance from which the weapon can be fired while still consistently inflicting casualties or damage.
Most modern projectile weapons fall into the broader category of either direct fire or indirect fire, with the former often being regarded as guns and the latter as artilleries. While some are small and light enough to be operated by individuals (i.e. small arms and grenade launchers), most require a team to aim, move or fire.
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