Go hit it hard before its gone. You have a Civil War union eagle button, and two backs to the same type button. You also have a late colonial early 19th century button, civilian pattern. They were commonly used long after the colonial period as replacement buttons on just about anything. I also see a CW knapsack "J" hook and CW bullets there. You also have a lot of Sharps carbine bullets there and Colt pistol bullets, among others. Looks like a cavalry camp.