Complex sentence: During the 2003 invasion of Iraq, Moulton led of one of the first infantry platoons to enter Baghdad, and he would serve a total of four tours of duty in Iraq from 2003 to 2008.
Split into simpler sentences: During the 2003 invasion of Iraq, Moulton led of one of the first infantry platoons to enter Baghdad. He served a total of four tours of duty in Iraq from 2003 to 2008.