The invention relates to a method and an arrangement for indicating that a target (1), such as a vehicle, has been hit. The target is provided with information on the weapon action, and a light source indicates a hit. The information can be made available by direct electromagnetic transmission, for example via radio, or by means of one or more strips (9-11) with detectors (13) being arranged on the target (1). In the latter case, the detectors detect incident illuminating electromagnetic radiation, and a light source indicates a hit when the incident radiation satisfies defined detection criteria. According to the invention, the light source is mounted directly in one or more strips (12) which in the present case can be the same as the detector strips and consist of distributed light points preferably in the form of light-emitting diodes (14). In this way, a protected and integrated solution is obtained which has little effect on the shape of the target.