alloquor

Alloquor, alloqui, allocutus sum is a third conjugation deponent: passive in form, active in meaning. Allocutus est means "he addressed", never "he was addressed", and that is the single thing to fix before anything else. It is ad plus loquor, with the d assimilating to the l; older editions print it adloquor, which is the same verb.

It takes a plain accusative of the person spoken to - milites alloqui - not a dative, which is where English "speak to" misleads. The construction is the standard one for a commander's speech before a battle, and the noun allocutio is the technical term for it (and, later, for a papal address). The deponent's real gift is the participle: allocutus means "having addressed", an active past participle that ordinary Latin cannot form.