Usage: 2 forms in 2 verses
Form Translated As     In Verse(s)
αρχισωματοφύλακεσ chiefs of the body guards LXX.Esth.2.21
αρχισωματοφύλακα as chief of the body-guard LXX.1Sam.28.2

Liddell-Scott-Jones

ἀρχισωματοφύλαξ (archisōmatophulax) chief guard G:N-M

ἀρχισωματοφύλαξ-σωμᾰτοφύλαξ [], ακος, ,

chief of the body-guard, [LXX+2nd c.BC+]

LSJ Scripture Refs: LXX.Esth.2.21