Complex sentence: A little more than a week later, on January 12, members of the 35th were attending a party in Hillsboro, when they were surprised by the Unionist Loudoun Rangers, leaving one dead and two captured.
Split into simpler sentences: A little more than a week later, on January 12, members of the 35th were attending a party in Hillsboro. They were surprised by the Loudoun Rangers, leaving one dead and two captured.