To use a booby trap with success the player needs the help of the Sapper and the Driver. It is a thin wire attached above the ground with explosives attached on it. As soon as an enemy soldier runs past the wire and trips over, it will create a massive explosion killing anyone near it.
To prepare it, the Driver needs to set up his wire trap first and then, the Sapper attaches a grenade on the wire.
It can be used in defense of an enemy raid or to ambush an enemy patrol. It is noisy and is midly effective against tanks.