 Lon Nol made preparations for an offensive plan codenamed 'Chenla' to be launched in late August of that same year.An ANK task-force consisting of a dozen infantry battalions – which included several 'repatriated' Khmer Krom volunteer battalions recruited in South Vietnam – supported by armour and artillery was assembled for the operation, which relied on limited ground and air support from the Army of the Republic of Vietnam (ARVN) and the Republic of Vietnam Air Force (RVNAF).Initially, Operation Chenla I went on as planned.