A training ammunition projectile comprising a hollow projectile body with a projectile head, designed to withstand the forces applied when the projectile is fired from a weapon and having a frangible ogive designed to burst when the projectile body strikes a target, said projectile further comprising: (a) a multi-spectral marking agent disposed in the head for marking the position of the target upon release when the ogive has burst upon impact with the target, said marking agent comprising: a plurality of first liquid chemical components each received in separate first frangible compartment in the head, said first components being mixed and reacting chemically with each other when the compartments break, causing the mixed components to luminesce, said compartments being designed to be broken by at least one of the initial acceleration and the centrifugal forces acting on the projectile when the projectile is fired from a weapon, while retaining the first chemical components in the ogive so that such components are mixed at the time the projectile is fired from a weapon and luminesce by the time the projectile strikes the target; and a low density, fine, dry powder material disposed in the head and designed to create a plume for visible marking of the target upon impact; and (b) a dry thermal material disposed in a second compartment in the projectile body having a frangible barrier wall designed to be broken due to at least one of the initial acceleration and the centrifugal forces acting on the projectile when the projectile is fired from a weapon, exposing the thermal material of oxygen and air in the projectile body and producing an exothermic reaction that emits heat during flight of the projectile, thereby to increase the temperature of said marking agent during flight and to create a plume for Infrared marking of the target upon impact; and a heat engine comprising a heat transfer boundary. (a) a multi-spectral marking agent disposed in the head for marking the position of the target upon release when the ogive has burst upon impact with the target, said marking agent comprising: a plurality of first liquid chemical components each received in separate first frangible compartment in the head, said first components being mixed and reacting chemically with each other when the compartments break, causing the mixed components to luminesce, said compartments being designed to be broken by at least one of the initial acceleration and the centrifugal forces acting on the projectile when the projectile is fired from a weapon, while retaining the first chemical components in the ogive so that such components are mixed at the time the projectile is fired from a weapon and luminesce by the time the projectile strikes the target; and a low density, fine, dry powder material disposed in the head and designed to create a plume for visible marking of the target upon impact; and a plurality of first liquid chemical components each received in separate first frangible compartment in the head, said first components being mixed and reacting chemically with each other when the compartments break, causing the mixed components to luminesce, said compartments being designed to be broken by at least one of the initial acceleration and the centrifugal forces acting on the projectile when the projectile is fired from a weapon, while retaining the first chemical components in the ogive so that such components are mixed at the time the projectile is fired from a weapon and luminesce by the time the projectile strikes the target; and a low density, fine, dry powder material disposed in the head and designed to create a plume for visible marking of the target upon impact; and (b) a dry thermal material disposed in a second compartment in the projectile body having a frangible barrier wall designed to be broken due to at least one of the initial acceleration and the centrifugal forces acting on the projectile when the projectile is fired from a weapon, exposing the thermal material of oxygen and air in the projectile body and producing an exothermic reaction that emits heat during flight of the projectile, thereby to increase the temperature of said marking agent during flight and to create a plume for Infrared marking of the target upon impact; and a heat engine comprising a heat transfer boundary. a heat engine comprising a heat transfer boundary.