How to activate vim-snippets for UltiSnips and Pathogen?

Question

I've installed the UltiSnips and vim-snippets plugins. In order for the snippets to work, I need to activate vim-snippets for UltiSnips in my .vimrc file.

Vundle version for snipmate looks like this:

ActivateAddons vim-snippets snipmate

I need to do the same, but for Pathogen and UltiSnips instead of snipmate.

How can I do it?

Update 1: My current .vimrc (UltiSnips doesn't work).

set encoding=utf-8
set fileencoding=utf-8
syntax on
execute pathogen#infect()
filetype plugin indent on
let g:UltiSnipsJumpForwardTrigger="<c-b>"
let g:UltiSnipsJumpBackwardTrigger="<c-z>"

I'm using Windows 10 (Russian locale, German keyboard layout).

Update 2: With this .vimrc file, snippet expansion works in gVim, but not in Vim.

set nocompatible
set encoding=utf-8
set fileencoding=utf-8
syntax on
execute pathogen#infect()
filetype plugin indent on
let g:UltiSnipsJumpForwardTrigger="<c-b>"
let g:UltiSnipsJumpBackwardTrigger="<c-z>"
let g:UltiSnipsSnippetsDir = $HOME.'/vimfiles/bundle/vim-snippets/UltiSnips'

Answer 1

I don't think you have to do that for Pathogen + UltiSnips + vim-snippets. I have such setup and only thing in my vimrc is let g:UltiSnipsExpandTrigger="<c-j>". Both plugins are in ~/.vim/bundle.