Jonah is about town, and he helps see to the guardsmen's well-being; bandaging wounds, cleaning old wounds, making sure that they are mostly warm, dry, and well-fed. He talks to them about their troubles, what worries them, and relays messages back to family and friends, if asked.
He mostly avoids Taeron, but out of a respect for the sheer weight of his duties more than anything else. He will pop in and ask him if there's anything he needs as well, though -- dry wrappings for feet, extra cloak, wounds checked, etc., but he avoids being bothersome.
((Willing to drop 3,000g on healing supplies, hot drinks (non-alcoholic, unless for medicinal purposes), warm meals, and additional clothing/basic equipment to accomplish the above. Feel free to PM (forum and/or in-game) about this.))