A large number of its original members re-enlisted as veteran volunteers. The large number marked as deserters may be accounted for by the fact that late in 1864, and early in 1865, about one hundred ''substitutes" were assigned to the regiment, who deserted as soon as they received their substitute pay.

I read this morning that Emily Dickinson's brother had paid $500 for 'substitute pay' during the Civil War. Well, I'd never heard the term applied to war, so I tried to learn more about substitute pay through Google. I didn't find much--only what I pasted above was of any interest to me.

When was this practice of paying for a substitute in service stopped?