You know, I have my dad's belt from Iwo, including the steel ring I heard was on Signal Corp belts for pole and tree climbing. It cam with two M1icon carbine pouches and two first aid pouches. when I got it from him. I would venture a guess that possibly the second pouch WAS for the revolver ammo.

I mentioned the dud Jap Type 97 grenade landing at my dad's feet. He had an ordie de-activate it. As it turned out, it had no fuse in it... Probably made by Chinese or Korean slave labor. He kept it as a reminder of how close he came. I still have it....