. . . . . "Fort" . . "Blockhouse" . "Blockhouse" . "blockhaus" . . "Strong House" . . . "blockhouse fort" . . . . . . . . "artillery fortification" . . "blockhouse" . "blockhouse lines" . "pillboxe" . . "forts" . . "blockhouse line" . . "Block House" . "artillery fort" . . . "garrison house" . "small fort" . "Platoon houses" . "blockhouses (''blocaos'')" . "block house" . . "block-house" . "blockhouses" . . . . . . "Blockhouse#Concrete_blockhouses" . "pillboxes" . .