Q:Facts: - battles: world war ii - death date: 25 december 1998 - allegiance: nazi germany -lrb- to 1945 -rrb- west germany - commands: schnellboot '' s-28 '' - rank: kapitanleutnant -rrb- -lrb- wehrmacht -rrb- kapitan zur see -lrb- bundeswehr - awards: knight 's cross of the iron cross - birth date: 11 september 1918 - serviceyears: 1937 -- 1945 , 1957 -- 1977 - name: karl-friedrich kunzel - branch: nazi germany ger - unit: 1 . schnellbootflottille - death place: kiel - birth place: magdeburg Based on these bullet points, write a short biography describing the life of karl-friedrich kunzel .
A:
karl-friedrich robert kunzel -lrb- 11 september 1918 -- 25 december 1998 -rrb- was a german naval officer and a schnellboot commander and recipient of the knight 's cross of the iron cross -lrb- -rrb- in world war ii .the knight 's cross of the iron cross was awarded to recognise extreme battlefield bravery or successful military leadership .