If this happened in Sweden, we'd have been shooting at the participating soldiers while it went on with machine guns, seeking out people associated with the coup and killing them in their homes etc.
If someone is committing a coup, you go 100%, because if they succeed you don't have a country any more.
This guy invited this in a democratic, orderly country. What crime is worse? If it were me I'd have wanted the death penalty for any participating soldiers too.