I am on IOS and noticed that as of couple of cycles ago I cannot figure out how to recycle all those useless frontline units. I was wondering of anyone has found out how to recycle them or if Gree meant to do this or just an oversight. Mods please let me know if I am just overlooking it or if something happened to not allow this.

If any other IOS users know how to recycle them please share the info with this idiot. I have about 1000 each of those useless tanks and planes.