中フランス語のtroupeから、古フランス語のtrope, troop, armyから、フランク?ゲルマン語の*thorp, to gather, to concentrateから、原ゲルマン語の*thurpa, village, settlementから、PIE *treb, to dwell, to settleから、語源的にはthorp, troupeと同じ。
英語の語源
troop
troop: [16] Troop was borrowed from French troupe (acquired again as troupe in the 19th century). This appears to have been a backformation from troupeau ‘flock, herd’, a diminutive formation based on Latin troppus. And troppus itself may have been of Germanic origin. By the time the word reached English it was already being applied to a ‘group of soldiers’, and its plural was being used as a collective term for ‘soldiers’. => troupe
troop (n.)
1540s, "body of soldiers," 1540s, from Middle French troupe, from Old French trope "band of people, company, troop, crowd" (13c.), of uncertain origin, perhaps from Frankish *throp "assembly, gathering of people" or another Germanic source, perhaps related to Old English eorp, Old Norse thorp "village" (see thorp). OED derives the French word from Latin troppus "flock," which is of unknown origin but also might be from the proposed Germanic source. Of groups of animals from 1580s. Specifically as "a subdivision of a cavalry force" from 1580s; of Boy Scouts from 1908. Troops "armed forces" is from 1590s.
troop (v.)
1560s, "to assemble," from troop (n.). Meaning "to march" is recorded from 1590s; that of "to go in great numbers, to flock" is from c. 1600. Related: Trooped; trooping.
例文
1. I was assigned to Troop A of the 10 th Cavalry.
私は第10騎兵隊のA連に派遣されました。
2.There are reports of fresh troop movements across the border.
最近国境を越える軍隊が報告されている。
3.There were reports of troop movements.
軍を動かすと報じられている。
4.The officer ordered the troop to retire from the action.
将校は部隊を戦闘から撤退させるよう命じた。
5. Troop movements can be observed from space by a satellite.