Abstract: An unmanned cruise missile includes a swingable tracker having a homing head which detects targets using optical, infra-red, and/or radar wavelengths. The homing head is mounted on an internal two-axis cardanic roll-pitch tracking system which includes a cylinder mounted for rotation about a roll axis. The homing head is mounted on a pitch bearing which is rotatable relative to the cylinder about a pitch axis. The homing head is rotatable relative to the pitch bearing about a yaw axis. A mirror of the homing head has a recess formed therein to enable the homing head to swing a greater distance without abutting the cylinder.