Complex sentence: Glyndwr Michael (4 January 1909-24 January 1943) was an illiterate homeless man whose body was used in Operation Mincemeat, the successful World War II deception plan that lured German forces to Greece, when in fact Sicily was the actual objective.
Split into simpler sentences: Glyndwr Michael (4 January 1909-24 January 1943) was an illiterate homeless man. Michael's body was used in Operation Mincemeat, the successful World War II deception plan that lured German forces to Greece, when in fact Sicily was the actual objective.