Abstract: The method and apparatus for determining and correcting alignment errors between fire control devices and weapon systems are distinguished by the following features. Target measuring sensors are mounted on guns which are mounted on servo-controlled mounts, and the sensor line of sight of each target measuring sensor is aligned with the line of sight of the gun. The guns containing the target measuring sensors are aligned to a common measuring target using a target tracking device. A deviation between the measured position of the common measuring target and the position of the line of sight of the target measuring sensor is detected in the target measuring sensor of the gun which is controlled by the target tracking device. This deviation is evaluated and processed to determine an alignment error vector taken into account during control of the gun. Control signals used during a firing operation are corrected on the basis of the alignment error vector.