Most of the 19 th century posts had gardens to supplement rations and privates— with green thumbs—assigned to tend to them. After all, our wonderful congress did not go out of their way to provide enough funding.
The 1880s book Hardtack and Coffee by Billings says that a prive’s pay was $13 a month in the War raised on June 30, 1864 to $16 for US troops. I do not know if state troops got any supplements from their home governments. Of course some later recruits were paid enlistment bonuses.
52 cents a day, must have made for boring poker games.