Originally Posted by BullMcGiveny
specifically, they say that they experimented on him with Zola's version of the super-soldier serum. And that's how he ends up surviving the fall.
But that doesn't explain why it makes it better for HYDRA to have been the ones to turn him into the Winter Soldier. In fact, it makes keeping that role for the KGB easier.
Why does it make keeping that role for the Sovs easier?
There *could* have been Soviets in the area where Bucky disappeared, but there's absolutely no evidence of that. There *is* evidence that HYDRA was there, in force.
And again, I keep coming back to the simple question: why would the Russians keep Bucky and brainwash him into being their Manchurian Candidate? The Russians were America's allies in WWII --- if they found a lost American soldier, it's 99.9% likely that they would've simply tried to return him to his unit.