A tripflare is a device used by military

Military

A military is an organization authorized by its greater society to use lethal force, usually including use of weapons, in defending its country by combating actual or perceived threats. The military may have additional functions of use to its greater society, such as advancing a political agenda e.g...

 forces to secure an area and to guard against infiltration

Infiltration tactics

In warfare, infiltration tactics involve small, lightly equipped infantry forces attacking enemy rear areas while bypassing enemy front line strongpoints and isolating them for attack by follow-up troops with heavier weapons.-Development during World War I:...

. It consists of tripwire

Tripwire

A tripwire is a passive triggering mechanism. Typically, a wire or cord is attached to some device for detecting or reacting to physical movement...

 around the area, linked to one or more flare

Flare (pyrotechnic)

A flare, also sometimes called a fusee, is a type of pyrotechnic that produces a brilliant light or intense heat without an explosion. Flares are used for signalling, illumination, or defensive countermeasures in civilian and military applications...

s. When the tripwire is triggered, as by someone unsuspectingly disturbing it, the flare is launched and begins burning. The light from the flare simultaneously warns that the perimeter may have been breached and also gives light for investigating. In defensive operations, trip flares are usually placed in predetermined kill-zones with machine guns sighted on them.

External links

• http://mdt.planetbattlefield.gamespy.com/Tutorials/BFV/tripflare.shtm
• http://www.fbodaily.com/cbd/archive/1995/09(September)/12-Sep-1995/13sol005.htm
• http://www.iramig.ir/Default.aspx?PageID=52&RelatedID=IwawIwdy