Very slow at first, but after 5 it becomes very noticeable. Wound management greatly increases the speed at which your troops heal. And a tournement lance if going for horse back, since it's super long and has no minimum requirements). (use weapons with no or low str requirements, and crossbows for ranged attacks. (Though your lord is the best if you decide to go that route, though it requires sacrificing combat effectiveness, since you'll be stuck working on Int and Charisma (mostly for leadership) instead of Str/Dex.very do-able though, since you really don't need str or dex to be effective. Ymira is also good to build up into a medic. Jeremus starts with really high values in all 3 and is free to hire, if you can find him.
You need someone with high wound management and first aid.