So, looking at nuclear arsenal build ups around the world the production numbers seem all over the place. Some nations took decades to piece it together. The Americans apparently had thousands in the late 50s on the other hand, while the Soviets lagged.
So, here's my question: Let's say a two nations are waging an Eastern Front scale of warfare. The tech level is 50s level. The side on the offensive has production levels something along the lines of the USSR (maybe a bit higher). The defenders have bit less than the US to start, and the war's thrown them for a loop. So, I'm wondering how many nukes the two could build up while fighting a massive scaled war? They've both got plenty of uranium, and there's a fair amount of room for testing. The attackers have their industrial centres a fair distance from the front, while the losing side has their heartland on the edge of the front (so bombing is a fairly straightforward thing for the attackers).