Not sure we can see Russia's army at Armageddon. We see "the armies of the world," but the emphasis is on the armies of the East -- India, China, perhaps Japan?
And when the thousand years are expired, Satan will be loosed out of his prison, and shall go out to deceive the nations which
are in the four corners of the earth, GOG and MAGOG, to gather them together in battle, The number of whom is as the sand of the sea. And they went up on the breadth of the earth and compassed the camp of the saints about, and the beloved city and fire came down from heaven and devoured them. And the devil that deceived them was cast into the lake of fire and brimstone where the beast and the false prophet are and shall be tormented day and night forever and ever.
REV 20 vs 7 - 10 KJV
Every dispensationalist book I have read identifies Gog with Russia. They also insist that the judgements in the passages in
Ezekiel happen before the Tribulation. I cant recall one book that mentions these verses in Revelation that clearly show the same Gog attacking Jerusalem at the end of the Millennium I suggest that the reason this passage is ignored is because it contradicts the Dispensationalist interpretation of the events taking place in Ezekiel.
Apart from this passage Israel is supposed to live in safely without walls when this happens. Nothing could be further from the truth today but it would be during the millennium.