Comment by tialaramex

Yeah, I wrote about this on HN before. Americans tend to imagine that WW2 ends and then East Germany immediately puts up a wall and now nobody can leave but it was way more gradual than that. The year the European war ended you could just walk across the border, you'd need to show some ID but you have ID because it was the war and Germans issued everybody with ID in the war. The Allies are manning the borders, they want to arrest Nazis, so ID saying you're a Nazi is a bad idea, but if you're just some farmer from outside Leipzig (so East Germany) you can easily cross. More than a Million people flee West. Are they foolish? You already know the answer.

By the end of the 1940s, things are tightening up, there are now armed "police" who in effect work for the Soviets "protecting" East Germany at the border, barbed wire and deep trenches now block unofficial crossings, but it is still definitely possible to leave, in the worst case maybe you bribe a guard. Hundreds of thousands are able to flee by "just" walking (or driving) West.

In 1952 the "Special Regime" begins to "keep out spies". Most of the border is sealed, you can't bribe your way when there is no official crossing, the remaining guards are told to shoot people who try to cross, after all none of them are legitimate. However since Berlin still has a crossing, and the West still seems hell bent on holding their half despite the fact it's cut off from the world, you could travel to East Berlin and sneak across to West Berlin. Over the next decade or so millions do, East Germany tried very hard to stop this, but because it was physically possible it seemed like there wasn't much they could do...

In 1961 they built the wall. It was no longer physically possible to escape.