Ezekiel 26:8

The cities and villages, dependencies of Tyre in the mainland, naturally are the first to suffer. Then the siege of the insular city itself is taken in hand. The order is precise: first the "fort" or moveable tower from which the archers shot so as to counteract the defensive efforts of the besieged (cf. Ezekiel 4:2); then the "mount" or embankment, which in this case was a dam thrown across the narrow strait, in order to gain access to the walls; then the "buckler" or shield, i.e. probably the testudo or roof of shields under cover of which the besiegers operated, and finally (Ezekiel 26:9) the battering engines.