During the American Civil War, soldiers from both the Union North and Confederate South built huts known as winter quarters to live in during the winter months when fighting and troop movements were usually minimal. Living in very confined and overcrowded spaces, with poor hygiene and limited medicine, resulted in high rates of death from disease in Civil War camps.
This was not taken in the national battlefield park but at a site close by.
Best to view in "Original" because other versions resized by Pbase are decidedly unsharp.
Stonewall Jackson, and how he got his name, posted earlier: