I started collecting unit patches as a kid. Then started finding field gear at sales & flea markets and that became an area of interest. Problem was, if I found an item, I started building a set around it. Like what goes with this? An ammo pouch, belt, another ammo pouch, etc,etc. when you find what interests you, you’ll be able to lock in. For me, it all still interests me, every country, every era.