LATIN DICTIONARYLexicon Latīnum
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“cavalry” in Latin

Riddle & Arnold A Copious and Critical English–Latin Lexicon, 1864

cavalry
equitatus, equites (general term): copiae equestres (the cavalry attached to an army): acies equitum (as drawn up for battle): ala (so far as the cavalry are placed on the wings; at each end of a line of infantry). Sometimes eques, sing., for equites (as pedes for pedites). The infantry and cavalry, copiae equitum peditumque; milites equitesque. All the cavalry, integer eques. To be strong in cavalry, multum cquitatu valere; ab equitatu firmum esse; equitatu paratum esse. To order the carairy to form, turmas equitum explicare (Tac., Ann., 13, 38, 3). To serve in the cavalry, equo merere: to give anybody a commission in the cavalry (or, in a cavalry regiment), ad equum rescribere (Caes., B.G., 1, 42). An engagement of cavalry, proelium equestre or equitum: pugna equestris. Many skirmishes with the cavalry occurred, crebro inter se equestribus proeliis contendebant. A cavalry horse, oquus militaris. A regiment of cavalry, cohors equestris (from 500 to 600 men). A company of cavalry, turma equitum.

Quick answer

What is the Latin word for cavalry?
The usual Latin words for “cavalry” are equitātus, eques, āla. The right choice depends on the sense; see the distinctions below.

Entry from J. E. Riddle & T. K. Arnold, A Copious and Critical English–Latin Lexicon (rev. C. Anthon, New York: Harper, 1864), digitised by Fergus J. P. Walsh, CC BY-SA 4.0; Latin markup adapted by latindictionary.co.