How to get engineers to auto reclaim?

[GuyInJeans]

Title is the entire question really. I've seen engineers automagically reclaiming entire forests but I can't figure out how to replicate that in my own games. How do you do it?

[Tydo]

put them on a patrol, then they begin reclaiming stuff if your mass bar drops below 80% or something like that.
They are stupid though, the might end up assisting something while the bar drops to 0% and still stay on the assist instead of going back to patrolling. There is no "stop being stupid" logic built in.

[GuyInJeans]

Thank you!

[sergeant_derp]

Attack move should work as well.

[ZaidusRecon]

Attack Move directly out of a factory (give the order to the factory) for a range bonus on the Reclaiming (though, this feature might be FAForever only, I'm not sure). Send them out from peripheral factories in a direction which is pointing away from any of your bases to avoid the 'Assisting instead of Reclaiming' issue.

Be aware of the right panel popping out to show that engineers are idle, something that will occur when the engineers have finished their 'Attack Move' Reclaim route. Patrolling engineers will never appear as idle.