Question: In what War did the father of Princess Christina Margarethe of Hesse die?
Related documents: [0]  [DOC] Princess Christina Margarethe of Hesse (German: "Prinzessin Christina Margarethe von Hessen" ; 10 January 1933 – 22 November 2011) was the eldest daughter of Prince Christoph of Hesse and Princess Sophie of Greece and Denmark. From 1956 to 1962, she was married to Prince Andrew of Yugoslavia, with whom she had two children. Her second marriage to Robert Floris van Eyck, a Dutch artist based in London, lasted from 1962 to 1986. [END] 
[1]  [DOC] Christoph Ernst August of Hesse (Frankfurt, 14 May 1901 – Apennine Mountains near Forlì, 7 October 1943) was the fifth son of Prince Frederick Charles of Hesse and Princess Margaret of Prussia. He was a German SS officer killed accidentally during World War II. [END] 
Answer: 
World War II
World War II