Abstract: A missile provided with a cruciform guidance system comprising a pair of north-south and a pair of east-west fins, each pair being coupled with a respective annular support pivotally mounted externally of the body of the missile. A pair of diammetrically opposed control devices is provided to control the pivotal adjustment of each annular support thereby to control the angle presented by the plane containing the north-south or east-west fins relative to the longitudinal axis of the missile body.If desired, each fin may be pivotally mounted on its respective support for movement between a folded position and an open position to facilitate launching of the missile from a launching tube.