I was a Medic with C/1/22 from September 1967 until mid April 1968 (just days before Chu Moor). When Medic Charlie Shyab was wounded on Chu Moor I went back to the company until it was pulled off the mountain (4/28/68).
I served the remainder of my tour as a Medic at the Battalion Aid Station at the firebase.
When C Company marched it was Platoon Leader, RTO, Medic followed by the M-60 crew with riflemen in front and behind. Sometimes an FO and his RTO would be with us.