Given the question: What key details about siegfried ludden can be extracted from the following bio? Bio: siegfried ludden -lrb- 20 may 1916 -- 13 january 1945 -rrb- was a german u-boat commander in world war ii and 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 . ludden is credited with the sinking of 8 ships of and one warship , the hms '' beverley '' , and damaging a further ship of . among others , he and '' korvettenkapitan '' wilhelm franken were killed on 13 january 1945 when a fire broke out on the accommodation ship '' daressalem '' in kiel harbor .
The answer is:
- battles is world war ii- death date is 13 january 1945- allegiance is nazi germany- commands is u-188 2- rank is '' korvettenkapitan '' -lrb- posthumous -rrb-- awards is knight 's cross of the iron cross- birth date is 20 may 1916- serviceyears is 1936 -- 45- name is siegfried ludden- branch is nazi germany- unit is u-141 1940 2- death place is kiel- birth place is neubrandenburg