Matvei Bronstein: Theorical physicist. Pioneer of quantum gravity. Arrested, accused of fictional “terroristic” activity and shot in 1938
Lev Shubnikov: Experimental physicist. Accused on false charges. Executed
Adrian Piotrovsky: Russian dramaturge. Accused on false charges of treason. Executed.
Nikolai Bukharin: Leader of the Communist revolution. Member of the Politburo. Falsely accused of treason. Executed.
General Alexander Egorov: Marshal of the Soviet Union. Commander of the Red Army Southern Front. Member of the Central Committee of the Communist Party. Arrested, accused on false charges, executed.
General Mikhail Tukhachevsky Supreme Marshal of the Soviet Union. Nicknamed the Red Napoleon. Arrested, accused on fake charges. Executed.
Grigory Zinoviev: Chairman of the Communist International Movement. Member of the Soviet Politburo. Accused of treason and executed.
Even the secret police themselves were not safe:
Genrikh Yagoda : Right-hand of Joseph Stalin. Head of the NKD Secret Police. He spied on everyone in Russia and jailed thousands of innocents. Yagoda was arrested and executed.
https://en.wikipedia.org/wiki/Genrikh_Yagoda
Nikolai Yezhov : Appointed head of the NKD Secret Police after the death of Yagoda. Arrested on fake charges, executed.
https://en.wikipedia.org/wiki/Nikolai_Yezhov
Everybody was absolutely terrified during this period. At least 600 000 people were killed and over one million people were deported to Gulags in Siberia.
The ironic thing is, while we were celebrating our win, they never stopped fighting the Cold War We took our eye off the ball, and they didn’t, and our current situation is the result.
But more to your point, I remember reading that after the fall, we discovered that not only was Soviet technology not up to our standards, they didn’t even have the machines to make the machines that it would take to make technology at our level.
But that was back in the 80s. They’ve had a lot of time to catch up.
We felt like right gits having built the F-15 in response to the Foxbat. What’s Hisnameski defected with a Foxbat, the West finally got a look at it, and said “oh. Heheh. Shit, did we overreact.”
My favorite thing ever said about the F-15 is “The last time we took (Russia) seriously, we built that thing.”