You have the training and intuition to administer first aid and other care effectively.
Battle Medic: If you have a Healer's Kit, you can use it as an action to tend a creature within 5 feet. That creature regains 1d6 + 4 HP plus additional HP equal to the creature's number of Hit Dice. A creature can benefit once per Long Rest.
Healing Rerolls: Whenever you roll a die to determine HP restored, you can reroll the die if it rolls a 1, and must use the new roll.