KP, acropolis, advance guard, arm, armed guard, armor-plate, armor, army, army group, bank, bank guard, barricade, bastion, battalion, battery, battle, battle group, beachhead, blockade, blockhouse, bridgehead, brigade, bulwark, bunker, cadre, castellate, castle, citadel, coast guard, cohort, column, combat command, combat team, company, cordon, cordon sanitaire, corps, crenellate, detachment, detail, dig in, division, donjon, embattle, entrench, fasthold, fastness, fence, field army, field train, file, flying column, fort, fortify, fortress, garrison house, goalie, goalkeeper, goaltender, guard, guarder, guardsman, hold, inlying picket, jailer, keep, kitchen police, legion, man, man the garrison, maniple, martello, martello tower, mine, mote, motte, organization, outfit, outguard, outpost, palisade, peel, peel tower, phalanx, picket, pillbox, platoon, posse, post, rank, rath, rear guard, regiment, safehold, section, security guard, squad, squadron, strong point, stronghold, tactical unit, task force, tower, tower of strength, train, train guard, troop, unit, van, vanguard, wall, ward, warder, wing