Original sentence: Kurt Josef Waldheim (21 December 1918 – 14 June 2007) was an Austrian diplomat and conservative politician, who attained notoriety after falsifying in his memoirs both the duration and the nature of his service as a Wehrmacht intelligence officer during World War II
Edited sentence: Kurt Josef Waldheim (21 December 1918 – 14 June 2007) was an Austrian diplomat and conservative politician, who attained notoriety after falsifying in his memoirs the fact of serving in Wehrmacht between April/May 1942 and January/February 1945