Al, it's very possible we did some work with Dave's unit, but probably not a lot. There were exceptions, such as when we were diverted to pick up Dave's drunk Bn Commander who had walked into a LOH main rotor.
Anyway, most of the records I have found show us working mostly with the 1st Brigade of the 4th Div. I didn't know it at the time... I don't think I had any idea who we were working with; or maybe I just forgot?
1st Brigade = 1/8 3/8 3/12
2nd Brigade = 2/8 1/12 1/22
3rd Brigade = 2/12 2/22 3/22 1/35 2/35
1st Bn/35th Infantry and 2nd Bn/35th Infantry were the ones swapped out of the 25th Infantry Division and into the 4th early in the war, then returned at the end.
Bob