https://en.wikipedia.org/wiki/2016_Turkish_coup_attempt
as an example of a modern failed coup where exactly 5 soldiers were killed (on the gov side)
(Not sure if drones were included in the planning)
While at least one of the dead on the other side was a history teacher
https://en.wikipedia.org/wiki/G%C3%B6khan_A%C3%A7%C4%B1kkoll...