Hi! I'm a newbie when it comes to genealogy and historical events. So, if I'm asking stupid questions-please forgive my ignorance.

I'm looking for information on my great great grandfather, John Wesley Johnson. He served in the Union Army-3rd TN Infantry Co F. This is what his tombstone states.

Is there a good site that can give me information about this Infantry. I'm just learning of his service and like I said, I'm extremely ignorant about the past wars. I was directed to this forum and I hope you can help.

Any help is appreciated. Thanks Lara Keith Johnson