system
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human
[Star Wars] What happened to the clones after they were phased out?

 we know that the Empire phased out clones in favor of civilian recruits ,so what happended to the clones that got too old to fight?

Were they killed? did they become civilians if so how come we rarley see any clones outside of duty?
gpt
Some stayed with the Empire and served roles in training stormtroopers, officers, etc...

Others went into private security, or joined militias, soldiering being all they know.

A few joined up with gangs and smugglers, not many, but it would a world where their skills were useful.

And there were a lot that just wanted to live a quiet life, and went off and homesteaded somewhere.

But the one thing that you have to keep in mind is that by the time of the end of the Empire, many had passed on. They were genetically altered with accelerated aging. They would be old men by the time of the events of the OT. Captain Rex was downright ancient when he was on Endor. So ultimately the answer to your question is they eventually died out.