A war games land mine includes a fluid supply mechanism, a housing and a sealing device. The fluid supply mechanism is configured for containing and selectively releasing therefrom a pressurized fluid. The housing has an interior surface, a first orifice and a second orifice, the first orifice of the housing being fluidly coupled with the fluid supply mechanism. The sealing device is movably mounted within the housing, the sealing device having a first side and a second side. The first side and the interior surface of the housing define a first chamber therebetween, the first chamber being fluidly coupled with the first orifice. The second side and the interior surface defining a second chamber therebetween, the second chamber being fluidly coupled with the second orifice and configured for being substantially filled with a marking agent. The sealing device is configured for being moved within the housing upon release of the pressurized fluid from the fluid supply mechanism to thereby eject the marking agent through the second orifice.
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