After looking at your photos, it looks like the web container can be placed on two heights on the user's belt. You could have it set low on your belt, but if you wanted it higher, the loop at the top is to loop through the wearer's brace to keep it steady to your chest. It looks like the same (or very-very similar) to the Battery-Staff equipment from the early 1930s. (Made by MECo) I will try & scan the photo I have so that you can see just how similar it is. So if your pouch is Great War, then this is just a later version of the same thing. I have seen pouches like the one you have at the shows in the past.