Speaking as a visitor from another service, retention is horrendous in green as well.
Blokes are signing off left, right and centre. This of course leads to manpower shortages resulting in more work for the remaining few therefore starting the circle of more sign offs again.
Obviously time away while serving is a given, however knowing about it in advance eases the burden.
Getting told with less than a weeks notice that you are off on a 7 week long exercise is going to
blokes off!
Sadly it appears that no senior officer has the minerals to do anything about it.