"National Redoubt" . . "Swiss redoubt fortress system" . "Alpine Redoubt" . . "defensive plan" . . . "National_redoubt" . "National redoubt#Portugal" . . . . . . . "last stand" . . . . . "national fortress" . . "heavy attacks" . "''Alpenfestung''" . . "redoubt" . "Alpenfestung (Alpine Fortress)" . . "national redoubt" . "National redoubt" . . "Alpenfestung" . "National redoubt" .