Synonyms to rear guard

advance guard, 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, scout, security guard, spearhead, the in thing, the last word, the latest thing, train guard, van, vanguard, warder, Naval Construction Battalion, RN, Royal Navy, Seabees, USN, United States Navy, air-sea rescue, argosy, armada, division, escadrille, fleet, flotilla, lifeboat, lifeguard, lifesaver, marine, merchant fleet, merchant marine, merchant navy, mosquito fleet, naval forces, naval militia, naval reserve, navy, rear gu