How common was this method, was this as unconventional as it seems and why would they even need fat to bandage soldiers wounds. Thank you
For whether or not it actually helps with the healing process you might need to go to r/askscience or a medical subreddit, but grease or lard is often mentioned as an ingredient for various healing salves in the 16th century. It was generally supposed to be mixed with oils, herbs, butter, mercury, or other ingredients.
Elizabethan Military Science Webb