Complex sentence: Edward Seitz was a member of the American foreign service and a special agent from Michigan killed in Iraq on October 24,2004, and was the first U.S. diplomat killed in the Iraq War that began in March 2003.
Split into simpler sentences: Edward Seitz was a member of the American foreign service and a special agent from Michigan killed in Iraq on October 24,2004. He was the first U.S. diplomat killed in the Iraq War that began in March 2003.