EntityQ91451· pop 8· linked from 417 articleswire obstacleSign in to savedefensive obstacles made from barbed wireConnectionsmachine gunEntitywatchtowerEntitystar fortEntitykasbahEntitysconceEntitycoastal defence and fortificationEntityWorld War IConceptAmerican Civil WarConceptBritish EmpireEntitytankEntityKorean WarEntitycanalEntitycastleEntityartilleryEntityfortificationEntityguerrilla warfareEntityfenceEntityhand grenadeEntitysiegeEntityland mineEntityCategoriesFortification (obstacles)