When I was a kid we had a festival and carnival in town every summer. Several times the military would put on a demonstration with the boats they used in the Mekong Delta complete with mock battle against black pajama wearing hostiles on the river banks. Any way after the mock battles us kids got to pick up the .30 cal and .50 cal brass and they passed out boxes of c rations. I ended up with a P-38 and kept it on my key ring. That thing came in handy on camp outs and hunting trips for a lot of years. I lost it back in the 1990s, I took it off of my keyring because I got tired of it trying to give me a vasectomy after the hinge got a little loose. And yep, we got those packs of five cigarettes and a book of matches in each box of rations.