One reference I have been using is an eyewitness account written by a 3AD ordinance officer at the battalion/brigade level depending on which major command had control over the assets. He refers to CCB and CCR which seem to be regimental combat teams but he was involved in company level maintenance and recovery. Each task force included several M16 and M15 Half Tracks. These were small probing forces for the 3AD which at the time of this account were separated into 3 columns establishing a screen between the 82nd Airborne on the East and Hotton on the West, where the 84th Infantry was moving into position.
I also agree that CM still rocks but I do think that these were assets that did add to the firepower of small units and should have been included.