In July 1964, the VC 271st and 272nd Regiments began moving into the provinces of Bình Dương, Bình Long and Phước Long to carry out their mission. During the first phase of their campaign, the VC regiments overran several strategic hamlets at Xan Sang, Cam Xe, Dong Xa, and Thai Khai. Between August and September 1964, VC regiments executed deep thrusts into Bình Dương and Châu Thành to apply additional pressure on South Vietnamese outposts situated on Route 14. During the second phase of their campaign, the VC ambushed two ARVN infantry companies and destroyed five armoured vehicles, which consisted of M24 Chaffee light tanks and M113 armored personnel carriers. The VC defeated regular ARVN units at the strategic hamlets of Bình Mỹ and Bình Co.