One of the many Google searches I did after reading an ancestor's letters...
This passage led me down a musical side track:
"...The sickness in camp is what thins the ranks. You would be much interested (writing to his father, a doctor) in seeing the sick winding their way every morning when the sick call is sounded. Drooping over, hands in their pockets, with long faces the "sick and lazy" march to the surgeon's tent at the time of "Jim along a Josy"...."
This passage led me down a musical side track:
"...The sickness in camp is what thins the ranks. You would be much interested (writing to his father, a doctor) in seeing the sick winding their way every morning when the sick call is sounded. Drooping over, hands in their pockets, with long faces the "sick and lazy" march to the surgeon's tent at the time of "Jim along a Josy"...."