a term applied exclusively to military affairs in the Bible. The engines to which the term is applied in ( 2 Chronicles 26:15 ) were designed to propel various missiles from the walls of the besieged town. One, with which the Hebrews were acquainted, was the battering ram, described in ( Ezekiel 26:9 ) and still more precisely in ( Ezekiel 4:2 ; 21:22 )