 An hour later, PAVN infantry assaulted Firebase Maury from the north and from the south in battalion strength.While the defenders were preoccupied with these attacks, a team of sappers used some encroaching woodlands to reach the western portion of the perimeter undetected.After cutting their way through the wire, the sappers destroyed five M109 howitzers and two ammunition trucks with satchel charges before slipping back out of the perimeter.