A real-life caltrop.
Caltrops are small improvised anti-personnel traps that consist of two or more nails tied into a tripod with one sharp end always pointing upwards
Battlefield Vietnam[]
Caltrops are a gadget featured in Battlefield Vietnam, issued to one of the two the North Vietnamese Army and Vietcong Scout kits. Each kit comes with five bundles.
The player holds a bunch of them and throws them on the floor to make a small trap. This essentially acts similarly to barbed wire, where if an enemy player walks on them, they will be damaged slightly, and continuously if they stay on them. Damage from Caltrops does stack, meaning that if one places more than one set of Caltrops in the same spot, an enemy will take damage from all sets simultaneously.
Caltrops are small and easily overlooked, especially when placed in tall grass and bushes. They are also useful as a warning system to the player, since they will get a hitmarker on their crosshair whenever an enemy walks over the caltrops. Another benefit is that caltrops don't disappear after being stepped on and remain in position for as long as the player is alive.
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