Lexical Definition

‎στρατόπεδον‎ stratópedon (strat-op'-ed-on) army camp G:N-N
from the base of ‎στρατιά‎ and the same as ‎πεδινός‎

army.

Usage: 2 forms in 3 verses
Form Translated As     In Verse(s)
στρατόπεδον his encamped army LXX.Jer.34.1
their encamped army LXX.Jer.41.12
στρατοπέδων encampments Luke.21.20

Abbott-Smith

στρατό-πεδον, -ου, τό (στρατός + πέδον, a plain), [in LXX: Je 41 (34):1* (חַיִל), II Mac 8:12, al. ;]
(a) a military camp;
(b) an army: Lk 21:20.†

Abbott-Smith References

Book Refs
Jeremiah 34:1*
Luke 21:20

Liddell-Scott-Jones

στρατόπεδον-ον, τό,

camp, encampment, [Refs 5th c.BC+]; Στρατόπεδα, name of a part of Egypt, [Refs 5th c.BC+]: hence, encamped army, [Refs 5th c.BC+]

__2 at Rome, the Castra Praetoriana, [Refs 2nd c.AD+]
__II generally, army, [Refs 5th c.BC+]; also, squadron of ships, [Refs 5th c.BC+]
__II.2 the Roman legion, [Refs 2nd c.BC+]
__III the court or suite of the emperor or his representative, [Refs 4th c.AD+]