These items were found within a Civil War camp. I can identify the obvious things bullets, jhooks, buttons, etc. But I'm not sure if these things are period or not. Please help!!
The long narrow iron oval is a strap-adjuster loop. Being made of iron it is almost certainly for a horse-harness strap. If it was made of brass and dug in a civil war army encampment site it would be from a Military belt.
Being found in a civil war military camp "indicates" it is from that time period, but that depends on how much civilian junk you are also finding there. Though the following Statistical Facts are disappointing to us civil war relic-diggers, we have to remember, although half-a-million men were using horses during the 4 years of the civil war, tens-of-millions of civilians were using horse-harness equipment for riding, pulling wagons, and plowing fields long before the civil war, and for about 70 years after it ended.
Because of those facts, a lot of the horsegear parts we dig are post-civil-war... they didn't exist at the time of the civil war. Relic-diggers will probably recognize quite a few metal horse-harness buckles and other parts taht are actually postwar in the J.M. Eilers & Co. 1907 Horse-Harness & Saddlery catalog, viewable for free here: https://archive.org/details/catalogueno200jmei