Final answer:
The Combat Lifesaver (CLS) requirement in AIT units mandates that a certain number of soldiers must be trained as Combat Lifesavers to provide advanced first aid on the battlefield.
Step-by-step explanation:
In AIT (Advanced Individual Training) units, the Combat Lifesaver (CLS) requirement stipulates that a minimum number of soldiers within a unit must be trained as Combat Lifesavers. This is a program designed to bridge the gap between the self-aid/buddy-aid (first aid) training given to all soldiers during basic training and the medical training given to combat medics. The purpose of CLS is to provide enhanced first aid for life-threatening injuries on the battlefield, ultimately improving the survivability of wounded combatants until they can be treated by professional medical personnel.
The exact requirement can vary depending on the type of unit and their operational environment, but typically, it is required that at least one soldier per squad, crew, team, or equivalent-sized unit should be CLS-certified. This ensures that there is always someone capable of providing critical medical aid during combat operations. Training for CLS includes advanced first-aid techniques such as opening and managing a casualty's airway, controlling bleeding using tourniquets, and treating chest trauma, among other emergency care skills.