 The 3rd Battalion took up positions on the right, on Khuong Que Hill where its 2nd Company had fought and lost the first engagement of the PAVN's Duc Duc campaign.The 1st Battalion was on the left, on Ky Vi Hill, and the 2nd Battalion was in reserve with the regimental headquarters near Duc Duc base.On 4 October the PAVN 1st Regiment, 2nd Division, launched simultaneous, heavily supported assaults on both forward battalions of the 56th Regiment.