1930s Soviet Russian Cameras? Help?

Hi! Thanks for looking. Alright, so I am gonna be doing some Red Army re enacting in the future, and would like to purchase a 30s era camera from Russia in working condition. It seems like the kind I need is either a Zenit or a FED, which variant, I'm not quite sure, but that is the least of my problems. I need to get some kind of batteries for it, and I have no idea which kind it takes or if they even exist nowadays, plus I need to get some Black and White film, that can be developed at like CVS. Help me!