I really doubt this. If there were a NATO-Russia war, I really can't see it lasting long enough for mass conscription to be worth it. Training completely inexperienced recruits into even the most basic viable soldiers will take at least a year or so, and that's assuming all the organisation and equipment provision can all just be easily scaled up, which is unlikely. By that point, there'll either have been a ceasefire, an escalation to nuclear weapons, or a settling in to a lower intensity conflict - and in any of those cases, a mass army won't really be necessary.