Turret (12) fitted with automatic canon and intended for a combat unit, said turret (12) comprising a turret housing (14) which is intended to be mounted on the outside of the combat unit and can rotate about a substantially vertical axis, and in which turret housing (14) there is a weapon holder (16) for pivotably supporting a canon about a horizontal axis, which canon has a barrel (20) projecting from the turret housing (14) and a rear part (22) with associated loading mechanism (24) situated inside the housing (14). At least one ammunition magazine (26, 28) is arranged to the side of the rear part (22) of the canon and has an outlet (29, 31) for the ammunition belt situated in such a way that the latter can be conveyed from a rear part of the magazine and guided forwards along an underside (33) of the magazine and thereafter curved through ca. 90.degree. about an axis substantially at right angles to the plane of the belt for feeding the projectiles to the loading mechanism (24).