Medical skills: Basic first aid. Młynar has spent a significant amount of time on the battlefield, and he has learned how to provide basic care for injured comrades while doing so. Still, he is no medic, and most of his measures are improvised. Think disinfecting with alcohol, creating makeshift splints with branches, and cauterizing bleeding wounds with Arts, rather than anything surgical.
Riding ability: Very experienced. Młynar is a skilled knight and has had the opportunity to ride a wide variety of beasts. While he prefers the burdenbeasts of Terra, horses do exist there, and he is familiar with them. (Which is quite funny- the horse man is an expert horseman.)

He might need a bit of help. Things that work for soldiers on the battlefield aren't necessarily the best outside of combat.