At the CLS and CMC kit levels, you should find hypothermia prevention equipment. These may be hypothermia prevention kits (which provide active prevention) and/or various types of blankets (which are a passive form of preventing hypothermia).
Although there are no materials that specifically address head injury treatment, the AVPU assessment can be documented on the DD Form 1380, and CMC kits will include military acute concussion evaluation forms, called the MACE 2, which uses evidence-based guidelines for evaluating a traumatic brain injury.