Given the question: Facts: - death place: atlantic ocean - battles: world war ii - death date: 13 october 1943 - allegiance: weimar republic -lrb- to 1933 -rrb- nazi germany - commands: u-402 2 - awards: knight 's cross of the iron cross - birth date: 19 september 1910 - serviceyears: 1930 -- 43 - name: siegfried von forstner - branch: weimar republic nazi germany - unit: sss vessel '' meteor '' battleship '' hessen '' cruiser '' '' admiral scheer '' cruiser '' nurnberg '' panzerschiff '' deutschland niobe '' u-99 1940 2 '' cruiser '' emden '' survey - image: file : siegfried von forstner.jpg - birth place: hannover - rank: korvettenkapitan posthumously promoted to fregattenkapitan Based on these bullet points, write a short biography describing the life of siegfried von forstner .
The answer is:
korvettenkapitan siegfried freiherr von forstner -lrb- 19 september 1910 -- 13 october 1943 -rrb- was a german u-boat commander during world war ii .he was also a recipient of the knight 's cross of the iron cross -lrb- -rrb- .the knight 's cross of the iron cross was awarded to recognise extreme battlefield bravery or successful military leadership .he and his entire crew of were killed in action on 13 october 1943 .