That's awesome. My great great grandfather, William Willis, and two of his brothers were on the other side of that in the 1st Tennessee Volunteer Cavalry (Union) Company G through Chickamauga, Kennesaw and Atlanta. Who knows, maybe they gave each other the hairy eyeball at some point.
https://www.amazon.com/PAPAGO-Camera-GoSafe-Option-GS2688G/dp/B01DUIBNPY/ref=sr_1_1?crid=UE1ZKF0ZIXVD&keywords=papago+268&qid=1569448874&sprefix=papago+26%2Caps%2C137&sr=8-1
Clips over your rear-view. I've had it for probably 3 years. Crisp, works great. Super long cord you can tuck under trim.