Original sentence: He attained notoriety after falsifying in his memoirs the fact of serving in Wehrmacht between April/May 1942 and January/February 1945.He was Secretary-General of the United Nations from 1972 to 1981, and President of Austria from 1986 to 1992.Kurt Josef Waldheim (21 December 1918 – 14 June 2007) was an Austrian diplomat and conservative politician
Edited sentence: Kurt Josef Waldheim (21 December 1918 – 14 June 2007) was an Austrian diplomat and conservative politician, who attained acute notoriety for denying his bureaucratic complicity in Nazi war crimes whilst serving as a Wehrmacht intelligence officer during World War II