The offensive began in late August, when the FANK task-force under the command of Brigadier general Um Savuth converged on Route 6 and its objectives were two-fold: firstly, sweep away PAVN and VC forces along the road and recapture the rice paddies around Kampong Cham.

The FANK task-force succeeded in catching the PAVN/VC by surprise, retaking Tang Kauk during early September with ease and opened 15 miles of Route 6 for a short time and the Cambodian troops then helped resettle refugees and raised local self-defense forces.

[1]: 6 In response to this offensive, the PAVN/VC forces mounted a series of counter-attacks along Route 7, intended to block the advance of the FANK units; the areas around Kompong Cham and Prey Totung saw significant fighting during the closing months of 1970.

Army of the Republic of Vietnam (ARVN) units then linked with the Cambodian task-force east of the Mekong River in December, allowing the FANK to reopen Route 7 without making contact with enemy troops.

[2]: 217–8 [1]: 19–20 [3] Despite early gains, the FANK only achieved a limited strategic success, with the cost of sacrificing some of the more experienced Khmer Krom battalions; the PAVN and VC still controlled a large portion of territory east of Phnom Penh.