 The bridge secured, the 1st Battalion joined the 3rd, and both moved south of Duc Duc, prepared to continue on toward Da Trach.By nightfall on the 18th, the 2nd Battalion, 2nd Infantry, had also moved to Duc Duc base, as had a battery of 155 mm howitzers.Meanwhile, a battery of 175 mm guns moved into firing positions in the Quế Sơn Valley, within range of Duc Duc.