A sniper is a marksman who shoots targets from concealed positions or distances exceeding the capabilities of regular personnel. Snipers typically have specialized training and distinct high-precision rifles.
In addition to marksmanship, military snipers are trained in camouflage, field craft, infiltration, reconnaissance and observation. Snipers are especially effective when deployed within the terrain of urban warfare, or jungle warfare.
Etymology
The term sniper was first attested in 1824 in the sense of the word "sharpshooter". The verb "to snipe" originated in the 1770s among soldiers in British India where a hunter skilled enough to kill the elusive snipe was dubbed a "sniper".
During the American Civil War, the common term used in the United States was "sharpshooter" or "skirmisher". Throughout history armies have used skirmishers to break up enemy formations and to thwart the enemy from flanking the main body of their attack force. They were deployed individually on the extremes of the moving army primarily to scout for the possibility of an enemy ambush. Consequently, a "skirmish" denotes a clash of small scope between these forces. In general, a skirmish was a limited combat, involving troops other than those of the main body. The term "sniper" was not in widespread use in the United States until after the American Civil War.
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