. "2 flak ships" . "British victory" . "Sunk in air attack" . "third raid" . . "1944-11-12" . . . . "sinking of the Tirpitz" . . . "United Kingdom" . "sank her" . . . "Operation Catechism" . . "removed the threat by November 1944" . "1 aircraft damaged" . . "finally destroyed" . . "Anti-aircraft batteries" . . . "1 battleship" . . "sunk there with heavy loss of life" . "Sunk by bombing 1944" . . "Catechism" . . . "Operation Catechism" . . . "high-altitude bombing attack" . . . "Tirpitz" . "hit by bombs" . "Germany" . . . "29 bombers" . "sinking of ''Tirpitz''" .