Definition: Generate a correct and concise answer for the question based on the words in the context.
Input: Context : Hans Johannsen (29 January 1913 -- 5 March 1961) was a German chief engineer on a U-boat in World War II and recipient of the Knight's Cross of the Iron Cross (German: Ritterkreuz des Eisernen Kreuzes).
Question : What award was received by Hans Johannsen?
Output:
Knight's Cross of the Iron Cross