Simplify the following text for a Grade 8 native English-speaking person.
Original: Nabonidus fled to Babylon , where he was pursued by Gobryas , and on the 16th day of Tammuz , two days after the capture of Sippara , `` the soldiers of Cyrus entered Babylon without fighting . ''
Simplified: Two days after the capture of Sippara , `` the soldiers of Cyrus entered Babylon without fighting '' .