Franklin, Tennessee, probably only had a population between 2,000 residents in 1864. That includes children. The Battle of Franklin resulted in up to 10,000 casualties: killed, wounded, missing, etc. Franklin residents banded together on the morning of December 1st, 1864, and opened their homes, churches and businesses to tend to the incredible suffering and carnage. One of those homes was that of John and Carrie McGavock.
Historian Eric Jacobson recounts that challenge in this video.
Also: see this video of Dr. Chris Lossom talk about the carnage after the battle too.