"corner bastions" . . "bastioned trace" . "bulwark" . . . "corner bastion" . . "outer bastions" . . . "bulwarks" . . . "Bastion#Types" . . "Bollwerk" . "bastions" . . . "embattled bastions" . "military fortification" . . . "semicircular bastion" . "bastion" . . . "Demi-bastions" . . "half-bastioned" . "demi-bastions" . . "Bulwark" . "semi-circular towers" . . . . . . "Demi-bastion" . "demi-bastion" . . . . . "Bastion" . . . "bastion-type" . . . . "Bolwerk" . "fortifications" . . "Bastion" . "bastion fortress" . "bastioned" . . . . . . .