Deon Martin, Karel Meiring and Petrus Matthews told TRC amnesty Judge Bernard Ngoepe they manned the roadblock as part of the AWB's plan to stop the African National Congress/SA Communist Party/Cosatu alliance from taking power.
The other six, Phillipus Kloppers, Frederick Badenhorst, Marius Visser, Lodewickes van der Schyff, Andre Visser and Gerardus Diedericks are expected to testify on Thursday.
Martins testified to the hearing that Kloppers, who is wheelchair-bound, told them AWB general Japie Oelofse had said to him "the revolution begins tonight (December 12)" and that they were to prepare for war.
He said they met at the Badenhorst residence where they drank alcohol and removed the registration plates of the Mercedes Benz and Nissan Sentra they planned to use at the roadblock.
"We then drove to Visser's house and had whiskey and brandy before heading to Raodera Road to set a roadblock," he said.
On their way, the men in the Sentra stopped to assault two black men walking on a nearby plot.
He said Kloppers chastised those who assaulted the two because it was not part of the operation. The aim was to kill ANC-SACP-Cosatu members and to confiscate illegal arms and ammunition.
The applicants said they stopped any cars with black occupants. The passengers were asked about their destinations before being asked about their political affiliations.
"The orders were to determine which political parties they belonged to and if they were ANC members they will be killed," Martins said.
Two cars were pulled off the road and the cars and occupants searched before Martin fired a shot in their direction, a sign that the others should open fire.
During the killing spree, Thembani Nkompone, Teboho Makhuza, Theo More and Patrick Gasemane were killed.
Those who survived to tell their story are Petrus Mothupi, William Segotsane, Gabriel Shabangu, Martha Bereng, Sipho Nkompone and Abraham Mothupi.