στρατοκῆρυξ

υκος, ὁ
A. herald of a camp or army, LXX 3 Ki. 22.36, BGU 992 ii 4 (ii B.C.).
2. one of 5 ἔκτακτοι attached to a τάξις or σύνταγμα, Arr. Tact. 10.4, Ael. Tact. 9.4, Ascl. Tact. 2.9; or to a ἑκατονταρχία, Arr. Tact. 14.4, Ael. Tact. 16.2, Ascl. Tact. 6.3.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
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