 It was a light regiment, having only two infantry battalions, an antiaircraft machine gun company, light artillery, and administrative support units.On 10 July, a week before the planned relief of the 78th Ranger Battalion at Da Trach, the 36th Regiment moved undetected into assembly areas close to ARVN outposts around Da Trach.Also on the move toward Da Trach were elements of all three regiments of the 2nd Division, the 1st, 31st, and 38th, plus the 10th Sapper Battalion, division artillery, and batteries of Military Region 5 artillery.