Re: First person
Here are another few things to consider. First where is your unit from, state, county etcc. What types of jobs did folks do there? Might be kinda hard to be a deep water fisherman in Vermont? What is your age? Might be hard to be a Bank President at age 18. What do you feel comfy doing? What life skills that have that you can use and relate to the 1860's?
As for myself I was raised ranching. Although I dont ranch today, I still almost ride a horse in my job daily. In south Texas they cowboys we call today were called "stockman". Ive adpated that. I read extensively and researched on what the major companies were, where they were located and who ran them.
Cattle for example here were raised for tallow and hides not for beef. Ive used little things like that to help me.
Get a handle on what you enjoy, and how you use that to your advantage, as well as read, read, and read some more. Use period letters, diaries and other accounts. There is a Civil War Dictionary on terms thats a great help. Prehaps one day you can learn what "eating the dishrag" means.
Running Discharge Mess
Texans did this. Texans Can Do It Again. Gen J.B. Hood