advance guard

body of troops sent ahead of the others to provide protection

Vanguard might refer to:MilitaryVanguard, the forward elements of a military tactical formation advancing, or prepared to advanceHMS Vanguard, any of several Royal Navy shipsVanguard class submarine of the Royal NavyUSNS Vanguard (T-AGM-19), the lead ship in a US Navy class
See more at Wikipedia.org...

Synonyms and related words:
airhead, armed guard, avant-garde, bank guard, battle line, beachhead, bridgehead, coast guard, cordon, cordon sanitaire, farthest outpost, first line, forefront, front, front line, front rank, front-runner, garrison, goalie, goalkeeper, goaltender, guard, guarder, guardsman, inlying picket, innovation, jailer, latest fad, latest fashion, latest wrinkle, line, new look, newfangled device, novelty, outguard, outpost, picket, pioneer, point, precursor, railhead, rear guard, scout, security guard, spearhead, the in thing, the last word, the latest thing, train guard, van, vanguard, warder,
  

advance-guard /əd'vɑ:nsɑ:d/
danh từ (quân sự) quân tiền phong
(C) 2007 www.TừĐiểnTiếngViệt.net

AVANGUARDIA. GRAN GUARDIA. PICCOLA GUARDIA