The Viet Cong had achieved dominion in the province  and decided to inflict a politically unacceptable defeat on the Australians. Their plan was to lure the Australians from their base by firing recoilless rifle and mortar shells into it. They theorised that the Australians would sweep the area around the base in an attempt to stop the attacks, and the Viet Cong would ambush the sweeping forces.