Greetings Cosmic Americans!
We've all heard of the Rebel tatterdemalions who subsisted on nothing but grass, dirt, and their own ear wax from 1861-65.
Of course that's not really true...rebs had a bit of a tougher time with rations but they did eat something.
Here is the regulation ration for a Confederate soldier as of January 28th, 1863 (pretty much copied from the US version:
3/4ths of a pound of pork or bacon, or one and a fourth pounds of fresh or salt beef. (Reduced to 1 pound of beef or 1/2 pound of pork in January 1863). 18 ounces of bread or flour, or 12 ounces of hard bread, or 20 ounces of corn meal.
Meh - not great but it could be worse....and if you believe all the Lost Cause types - it was. Sure there were plenty of shortages, especially during sieges and when supply lines got cut by Union armies. The food - when it was available - wasn't that great either...the pork often went rancid and there was plenty of times when there was more fat than meat....cooking it reduced the food to next to nothing.
But soldiers - being a resourceful lot - would often live off of the land. Both armies "liberated" the available resources when they came upon them. So if you were a civilian in, let's say, northern Virginia in 1864...you might want to look after your chickens. Just sayin'...