To piggy back on what Mikey said, the modern US Army platoon has a dude sliced down from BN. We mobilized with two medics attached to our platoon. Once we hit the FOB, they were taken away to man the Troop Medical Clinic, though.
Individual soldiers will have a minimum of basic assessment and stabilization. Every joe will know how to put on a combat tourniquet. At least two guys in a squad will probably also have Combat Life Saver training. Depending on the exact timeframe you’re gaming, the exact level of training these guys get will vary. When I did CLS prior to deployment, it was a full 40-hour course and included basic triage, setting IVs and locks, airway management and bleed control. Now it’s a 16-hour course.