Devildoc
Verified Military
You keep continuity with the leadership. Establish a "tour time" for assignment to the busiest areas (year or two or whatever) as a minimum time to be there, and give them prioritized station of choice following minimum tour. Keep an eye on them and let them do what they can take, and shift them out either on their own request or when they need it but don't want to "puss out".
I'm down with that, but then I've never been assigned to patrol or anything like that, I was just on the tactical team.